In a recent article in this journal, Roberts suggests a semantic method for distinguishing ambiguity and generality, a method which is intended to avoid the problems that others such as Zwicky and Sadock, Hintikka, and McCawley have found in making such a decision. Roberts claims that his test derives its validity from the observation that an ambiguous expression has a disjunction of meanings, whereas a general expression has but one meaning.

Donnellan makes a convincing case for two distinct uses ofdefinite descriptions. But does the difference between the usesreflects an ambiguity in the semantics of descriptions? This paperapplies a linguistic test for ambiguity to argue that the differencebetween the uses is not semantically significant.

Viebahn (2018) has recently argued that several tests for ambiguity, such as the conjunction-reduction test, are not reliable as tests for polysemy, but only as tests for homonymy. I look at the more fine-grained distinction between regular and irregular polysemy and I argue for a more nuanced conclusion: the tests under discussion provide systematic evidence for homonymy and irregular polysemy but need to be used with more care to test for regular polysemy. I put this (...) conclusion at work in the context of the debate over the alleged referential-attributive ambiguity of the definite article. In reply to various criticisms, defenders of the ambiguity view argue that this is a case of polysemy. But opponents object that the dual use of the definite article fails tests for ambiguity. The debate seems to have come to stalemate, unless the relevance of the tests is determined for cases of alleged polysemy. I conclude that the balance of considerations incline towards rejecting the ambiguity thesis. (shrink)

Purpose: Tolerance for ambiguity (TFA) is a character trait that is associated with a multitude of benefits for physicians, including increased empathy, greater desire to work in underserved areas, fewer medical errors, enhanced psychological well-being, and lower rates of burnout. Furthermore, it has been shown that TFA is a malleable trait that can be enhanced with interventions such as art courses and group reflection. This study describes the utility of a six-week medical ethics elective course in increasing TFA in (...) first- and second-year medical students.Methods: First- and second-year medical students were enrolled in an elective medical ethics course at Cooper Medical School of Rowan University that guided students in critical thinking, group discussion, and respectful debate regarding various ethical dilemmas in medicine. Students took a validated survey before and after course completion to measure TFA. The average pre- and post-course scores for each semester, as well as the total cohort of 119 students, were compared using paired t-tests.Results: A statistically significant improvement in TFA scores was observed in the overall cohort, as well as in each individual semester of the medical ethics elective course offering.Conclusion: A six-week elective course in medical ethics can significantly improve medical students’ TFA. (shrink)

In order to tesl for critical thinking dispositions, the presence of the requisite critical thinking abilities must first be established. Otherwise, it is always a plausible counterexplanation of failure to use certain abilities that they were not possessed. If a person spontaneously uses some ability on a task, then it is often legitimate to conclude that the person has both the ability and the disposition to use it. However, if the person does not use the ability spontaneously, the conclusion is (...) ambiguous. The person might not have the ability, or might have the ability but not the disposition to use it, or not the disposition to use it in the specific circumstances of the presented task. This paper proposes methods of critical thinking testing designed to deal with each of these possibilities. (shrink)

The appearance of consciousness in the universe remains one of the major mysteries unsolved by science or philosophy. Absent an agreed-upon definition of consciousness or even a convenient system to test theories of consciousness, a confusing heterogeneity of theories proliferate. In pursuit of clarifying this complicated discourse, we here interpret various frameworks for the scientific and philosophical study of consciousness through the lens of social insect evolutionary biology. To do so, we first discuss the notion of a forward test versus (...) a reverse test, analogous to the normal and revolutionary phases of the scientific process. Contemporary theories of consciousness are forward tests for consciousness, in that they strive to become a means to classify the level of consciousness of arbitrary states and systems. Yet no such theory of consciousness has earned sufficient confidence such that it might be actually used as a forward test in ambiguous settings. What is needed now is thus a legitimate reverse test for theories of consciousness, to provide internal and external calibration of different frameworks. A reverse test for consciousness would ideally look like a method for referencing theories of consciousness to a tractable model system. We introduce the Ant Colony Test as a rigorous reverse test for consciousness. We show that social insect colonies, though disaggregated collectives, fulfill many of the prerequisites for conscious awareness met by humans and honey bee workers. A long lineage of philosophically-neutral neurobehavioral, evolutionary, and ecological studies on social insect colonies can thus be redeployed for the study of consciousness in general. We suggest that the ACT can provide insight into the nature of consciousness, and highlight the ant colony as a model system for ethically performing clarifying experiments about consciousness. (shrink)

The problem addressed is that of finding a sound characterization of ambiguity. Two kinds of characterizations are distinguished: tests and definitions. Various definitions of ambiguity are critically examined and contrasted with definitions of generality and indeterminacy, concepts with which ambiguity is sometimes confused. One definition of ambiguity is defended as being more theoretically adequate than others which have been suggested by both philosophers and linguists. It is also shown how this definition of ambiguity obviates (...) a problem thought to be posed by ambiguity for truth theoretical semantics. In addition, the best known test for ambiguity, namely the test by contradiction, is set out, its limitations discussed, and its connection with ambiguity's definition explained. The test is contrasted with a test for vagueness first proposed by Peirce and a test for generality propounded by Margalit. (shrink)

A family of familiar linguistic tests purport to help identify when a term is ambiguous. These tests are philosophically important: a familiar philosophical strategy is to claim that some phenomenon is disunified and its accompanying term is ambiguous. The tests have been used to evaluate disunification proposals about causation, pain, and knowledge, among others. -/- These ambiguity tests, however, have come under fire. It has been alleged that the tests fail for polysemy, a common (...) type of ambiguity, and one that is at issue in philosophically interesting cases. Furthermore, the objection that the tests fail for polysemy is often taken to be an undeniable bit of linguistic data. -/- We argue that this is mistaken. The objection implicitly relies on controversial assumptions about how to account for copredicational sentences, in which a single argument is ascribed prima facie incompatible properties. Furthermore, on several viable theories of copredication, the objection fails. However, our discussion also reveals that even if ambiguity tests are preserved, they may be significantly harder to execute than previously thought. (shrink)

How should we make decisions when we do not know the relevant physical probabilities? In these ambiguous situations, we cannot use our knowledge to determine expected utilities or payoffs. The traditional Bayesian answer is that we should create a probability distribution using some mix of subjective intuition and objective constraints. Imprecise Bayesians argue that this approach is inadequate for modelling ambiguity. Instead, they represent doxastic states using credal sets. Generally, insofar as we are more uncertain about the physical probability (...) of an event, there is more divergence in the credal set. Hence, their approach can represent these ambiguities via the extent of the divergence. Imprecise Bayesianism has mostly been advocated for its epistemological features. In this article, we examine its properties for decision-making. We develop a model for comparing standard and Imprecise Bayesianism by testing their performances in a classic decision problem. We find that the representational tools of Imprecise Bayesianism also cause it to underperform in our tests. This issue has been overlooked, because previous research on Imprecise Bayesianism has not utilised agent-based modelling to provide information about its performance in the short-run. Overall, we reveal the Ambiguity Dilemma for Imprecise Bayesianism: To what extent should one value representational power or decision-making performance? (shrink)

Certain nonwords, like maluma and takete, are associated with roundness and sharpness, respectively. However, this has typically been demonstrated using explicit tasks. We investigated whether this association would be detectable using a more implicit measure—a sequential priming task. We began with a replication of the standard Maluma/Takete effect before examining whether round and sharp nonword primes facilitated the categorization of congruent shapes. We found modest evidence of a priming effect in response accuracy. We next examined whether nonword primes affected categorization (...) of ambiguous shapes, using visual and auditory primes. We found that ambiguous shapes were categorized as round more often following the presentation of a round nonword. This suggests that phonemes may activate related shape information which then affects the processing of shapes, and that this association emerges even when participants are not explicitly searching for it. (shrink)

Arnold Zwicky and Jerrold Sadock object to my test for distinguishing ambiguity from generality by offering a counterexample and general criticisms about the use of intuitions in the test. Though I disagree with their criticisms, their paper has helped me to become aware of the unclarity of my earlier paper in regard to generality.

In arguing against a supposed ambiguity, philosophers often rely on the zeugma test. In an application of the zeugma test, a supposedly ambiguous expression is placed in a sentence in which several of its supposed meanings are forced together. If the resulting sentence sounds zeugmatic, that is taken as evidence for ambiguity; if it does not sound zeugmatic, that is taken as evidence against ambiguity. The aim of this article is to show that arguments based on the (...) second direction of the test are misguided: ambiguous expressions, and in particular philosophically contested ones, do not reliably lead to zeugmaticity, so an absence of zeugmaticity provides no meaningful evidence for an absence of ambiguity. (shrink)

For many philosophers, the Lying Test is a reliable instrument for collecting data in semantics. Michaelson argued that the Lying Test does not fall prey to the problem with ambiguity that limits the Cancellability Test of Gricean inspiration. I contend that Michaelson's argument in favor of the Lying Test overlooks two fundamental aspects of what determine the content of an utterance.

This paper presents evidence that ‘because’ is importantly ambiguous between two closely related senses covering what are usually called causal explanations, on the one hand, and grounding or metaphysical explanations, on the other hand. To this end, it introduces the lexical categories of monosemy, polysemy and homonymy; describes a test for polysemy; and discusses the results of the test when applied to ‘because’. It also shows how to understand so-called hybrid explanations in light of the semantic facts established by the (...) analysis. (shrink)

BackgroundGenetic/genomic testing (GGT) are useful tools for improving health and preventing diseases. Still, since GGT deals with sensitive personal information that could significantly impact a patient’s life or that of their family, it becomes imperative to consider Ethical, Legal and Social Implications (ELSI). Thus, ELSI studies aim to identify and address concerns raised by genomic research that could affect individuals, their family, and society. However, there are quantitative and qualitative discrepancies in the literature to describe the elements that provide content (...) to the ELSI studies and such problems may result in patient misinformation and harmful choices.MethodsWe analyzed the major international documents published by international organizations to specify the parameters that define ELSI and the recognized criteria for GGT, which may prove useful for researchers, health professionals and policymakers. First, we defined the parameters of the ethical, legal and social fields in GGT to avoid ambiguities when using the acronym ELSI. Then, we selected nine documents from 44 relevant publications by international organizations related to genomic medicine.ResultsWe identified 29 ELSI sub-criteria concerning to GGT, which were organized and grouped within 10 minimum criteria: two from the ethical field, four from the legal field and four from the social field. An additional analysis of the number of appearances of these 29 sub-criteria in the analyzed documents allowed us to order them and to determine 7 priority criteria for starting to evaluate and propose national regulations for GGT.ConclusionsWe propose that the ELSI criteria identified herein could serve as a starting point to formulate national regulation on personalized genomic medicine, ensuring consistency with international bioethical requirements. (shrink)

Cross-linguistic comparisons serve as empirical tests generating evidence for and against lexical ambiguity in words like “good”, “know”, “the”, “can”, and “may”. Critics question such comparisons' validity. This article examines how cross-linguistic comparisons are treated as tests and shows that they have two predominant forms: one modeled on modus tollens, and another on Bayes' theorem, where the former is an enthymematic version of the latter. This analysis reveals the strengths and weaknesses of cross-linguistic comparisons, and thereby guides (...) interpretation of their results. It concludes that cross-linguistic comparisons generally yield stronger evidence against lexical ambiguity than for it. (shrink)

I defend the view that ordinary objects like statues are identical to the pieces of matter from which they are made. I argue that ordinary speakers assert sentences such as ‘this statue is a molded piece of clay’. This suggests that speakers believe propositions which entail that ordinary objects such as statues are the pieces matter from which they are made, and therefore pluralism contradicts ordinary beliefs. The dominant response to this argument purports to find an ambiguity in the (...) word ‘is’, such that ‘is’ in these sentences means the same as ‘constitutes or is constituted by’. I will use standard tests for ambiguity to argue that this strategy fails. I then explore and reject other responses to the argument. (shrink)

Previous research reported that in processing structurally ambiguous sentences comprehenders often preserve an initial incorrect analysis even after adopting a correct analysis following structural disambiguation. One criticism is that the sentences tested in previous studies involved referential ambiguity and allowed comprehenders to make inferences about the initial interpretation using pragmatic information, suggesting the possibility that the initial analysis persisted due to comprehenders' pragmatic inference but not to their failure to perform complete reanalysis of the initial misanalysis. Our study investigated (...) this by testing locally ambiguous relative clause sentences in Japanese, in which the initial misinterpretation contradicts the correct interpretation. Our study using a self-paced reading technique demonstrated evidence for the persistence of the initial analysis with this structure. The results from an eye-tracking study further suggested that the phenomenon directly reflected the amount of support given to the initial incorrect analysis prior to disambiguating information: The more supported the incorrect main clause analysis was, the more likely comprehenders were to preserve the analysis even after the analysis was falsified. Our results thus demonstrated that the preservation of the initial analysis occurs not due to referential ambiguities but to comprehenders' difficulty to fully revise the highly supported initial interpretation. (shrink)

There is a widespread and largely unchallenged assumption within philosophy that the word ‘normal’ is ambiguous: i.e., that it can mean different things in different contexts. This assumption appears in work within topics as varied as the philosophy of biology, medicine, justification, causation, and more. In this paper I argue that we currently lack any independent reason for adopting such an assumption. The reason that would most likely be offered in its favour requires us to ignore an alternative and equally (...) plausible explanation for the seeming variety of different meanings that ‘normal’ is taken to have. Meanwhile, the well-known conjunction reduction test for ambiguity provides no evidence for the ambiguity of ‘normal’, and in fact suggests that maintaining this ambiguity claim is more difficult than has been initially supposed. Therefore, with the way things stand at present, it should not be assumed without argument that ‘normal’ is an ambiguous term. (shrink)

While distinguishing between the actions and physical boundaries of self and other (non-self) is usually straightforward there are contexts in which such differentiation is challenging. For example, self–other ambiguity may occur when actions of others are similar or complementary to those of the self. Even in the absence of such situational challenges, individuals experiencing hallucinations have difficulties with this distinction, often experiencing thoughts or actions of self as belonging to other agents. This paper explores the role of ambiguity (...) in self–other differentiation, drawing from developmental, psychodynamic, and neurocognitive perspectives. A key proposal is that engagement in contexts that make distinctions between self and other challenging yet necessary allow reality-testing skills related to agency to develop. Attunement in typical caregiver–infant interactions is framed as a safe but inherently ambiguous environment that provides optimal condition for the infant to develop a coherent self–other sense. Vulnerability to psychosis may be related to limited access to such an environment in early development. However, the perceptual, cognitive, and social skills that contribution to attribution are likely to be malleable following infancy and improve though opportunities for boundary play in similarly ambiguous settings. Using music-making to illustrate, we postulate that engagement in intricate joint-actions that blurs agentic boundaries can contribute to the continued development of an adaptive sense of self and other essential to healthy social functioning. Increased insight into the self–other ambiguity may enhance our understanding of mechanisms underlying “self-disorders” such as schizophrenia and eventually extend the range of social and arts-based therapeutic possibilities. (shrink)

This article deals with the impact of governmental assistance on insurance demand under ambiguity, i.e., in situations where probabilities are uncertain. First, using a model of insurance demand under ambiguity, we derive theoretical predictions about the impact of several governmental assistance programmes on optimal insurance demand. For example, governmental assistance through a fixed public support scheme implies that partial insurance is always optimal under fair insurance with ambiguity. Second, we present the results of an experiment designed to (...) test these predictions. We find support for several of our theoretical predictions. For example, the presence of governmental assistance through a fixed public support scheme decreases individuals’ willingness to pay to be fully insured. Finally, we compare these results with those obtained for a risk situation. We find that, regardless of the form of governmental assistance, participants in the ambiguity context are consistently willing to pay more to be fully insured than participants in the risk situation. (shrink)

Recent experimental work on “natural” kind terms has shown evidence of both descriptive and nondescriptive reference determination. This has led some to propose ambiguity or hybrid theories, as opposed to traditional description and causal‐historical theories of reference. Many of those experiments tested theories against referential intuitions. We reject this method, urging that reference should be tested against usage, preferably by elicited production. Our tests of the usage of a biological kind term confirm that there are indeed both descriptive (...) and causal‐historical elements to the reference determination of some natural kind terms. We argue that to accommodate our results and earlier ones, we should abandon the common assumption that any one theory of reference fits all natural kind terms. Rather, it is likely that some terms are descriptive, some causal‐historical, some ambiguous, and some hybrid. This substantive conclusion is accompanied by a methodological one. Our experiments, like some earlier ones, found participants contradicting both each other and themselves. We argue that these contradictions indicate a lack of linguistic competence with the term. We conclude that these experiments have been faulty, because they test terms that are novel to participants and/or use fantastical vignettes. We provide some suggestions for future research. (shrink)

I argue in this paper that some of the most basic commitments of Kantian ethics can be understood as grounded in the dynamic of sense that Merleau-Ponty describes in his Phenomenology of Perception. Specifically, I argue that Merleau-Ponty’s account supports the importance of universalizability as a test for the moral permissibility of particular acts as well as the idea that the binding character of the moral law is given as something like a fact of reason. But I also argue that (...) Merleau-Ponty’s account of reversibility suggests an important dimension of moral experience that is given in the experience of contact and that is underthematized in moral philosophies like Kant’s that emphasize the role of universalizability. Finally, I advance a positive account of moral experience that is centered on the idea of tact as ambiguous imperative. (shrink)

Incomplete information is a commonly cited barrier to the adoption of new innovations. We present a decision-making experiment, conducted with farmers in the field, that explores the extent to which information which reduces ambiguity may be provided as a public good. In the experiment, participants make a series of decisions between a risky gamble and an ambiguous gamble. An initial private decision is followed by second choice in which participants know that their chosen gambles and outcomes will be publicly (...) but anonymously revealed. Selection of the ambiguous option in this decision thus provide public good information which can be used to update beliefs about the ambiguous gamble. After the public revelation, participants make one final choice between the two options which we use to assess learning. We also test communication as a mechanism to increase provision of the public good. We find evidence that people with preference to avoid ambiguity contribute to public good information while risk averse people free ride. Communication does not affect the overall public good provision, either in a positive or negative direction. Finally, we find that people draw appropriate inference from the information that the public good provides. We relate our findings to the issue of new technology adoption in agriculture which is of particular importance for our participants. (shrink)

Contrary to what seems to be predicted by a Strawson-inspired view, in presupposition denials the presupposition triggered by, e.g., ‘the king of France’ seems to be cancelled. To explain this puzzling instance of the projection problem, defenders of a Strawson-inspired view have proposed various ad hoc ambiguities. I develop a version of Segmented Discourse Representation Theory that explains the puzzling presupposition-cancelling phenomenon relying only on independently motivated pragmatic processes. Appealing to Kripke’s “test” for the adequacy of ambiguity motivating counterexamples, (...) I argue that my analysis is to be preferred over proposals that posit ad hoc ambiguities. Two key insights of my analysis are, first, that the “cancellation” of presuppositions in presupposition denials depends upon the illocutionary effects of rejection and correction, and, second, that the process of presupposition accommodation often involves the speaker performing an ancillary sort of speech act, viz. the speech act of presupposing. (shrink)

This article presents the results of a survey designed to test, with economically sophisticated participants, Ellsberg’s ambiguity aversion hypothesis, and Smithson’s conflict aversion hypothesis. Based on an original sample of 78 professional actuaries (all members of the French Institute of Actuaries), this article provides empirical evidence that ambiguity (i.e. uncertainty about the probability) affect insurers’ decision on pricing insurance. It first reveals that premiums are significantly higher for risks when there is ambiguity regarding the probability of the (...) loss. Second, it shows that insurers are sensitive to sources of ambiguity. The participants indeed, charged a higher premium when ambiguity came from conflict and disagreement regarding the probability of the loss than when ambiguity came from imprecision (imprecise forecast about the probability of the loss). This research thus documents the presence of both ambiguity aversion and conflict aversion in the field of insurance, and discuses economic and psychological rationales for the observed behaviours. (shrink)

This paper considers four lines of objection to the efficacy or worth of Grice's cancellability test for conversational implicatures – the coherence objection, the entailment objection, the sarcasm objection, and the ambiguity objection. I argue that the test survives these objections relatively unscathed; and hence conclude that the cancellability test is still a significant, useful, reliable indicator at the semantics/pragmatics interface.

This article considers the experiences of health consumers who have undergone testing for human immunodeficiency virus antibodies, T cells, and viral load. These HIV-related tests are deployed for the purposes of making definitive diagnoses; yet some test consumers experience ambiguous outcomes. Drawing on an analysis of differing end-user experiences of these tests, where consumers' knowledge reflected the multiplicity and heterogeneity in test design, the author explores how these experiences reflect particular knowledges about these tests. The article contributes (...) to efforts analyzing how health consumers are active end users co-constructing the social meaning of technologies in mutual relationship with other users. The author discusses how this new knowledge can be used to delineate a greater role for consumer evaluation of medical testing within a broader understanding of test design and performance. Relevant links are made to issues such as genetic testing and assessing claims about the efficacy of medical tests. (shrink)

The aim was to verify the potential of holistic approaches towards the evaluation of human figure drawing. Groht-Marnat, Tharinger, Stark favour this approach, and findings seem to legitimize considerations about its diagnostic productivity. Yama, Dans-Lopez and Tarroja have identified bizarre and artistic quality criteria for drawing that have a relevant interpretative meaning. Within the study involving 525 normal adult subjects, the hypothesis of differences in personality traits and performance level produced by authors of selected types of drawings, was verified. The (...) criterium of bizarre drawing proved to be an important indicator of intellectual abilities monitored by subtests of the ISA-S test, the non-verbal CF 2A test, Decision-making test. They achieved the lowest scores in all parameters, with significance in relation to more detailed drawings. Results from IHAVEZ and DOPEN questionnaires suggest that bizarre character producers are more emotionally instable, less emotionally resilient, less anticipating, and less self-controlling, less rational, responding more intensely to problems and are less orientated towards their solution. They are more neurotic and present more psychotic experience. The main limitation is the chosen approach. Holistically evaluated drawing is rare in terms of its occurrence in a normal population. Even within the files involving several hundred participiants, it is possible to clearly classify drawing in the maximum number of tens. Diversity of the terminology and methodological ambiguity constitutes another limitation. The bizarreness itself is not interpreted clearly, rather the contrary. (shrink)

A long-standing question in cognitive science is how high-level knowledge is integrated with sensory input. For example, listeners can leverage lexical knowledge to interpret an ambiguous speech sound, but do such effects reflect direct top-down influences on perception or merely postperceptual biases? A critical test case in the domain of spoken word recognition is lexically mediated compensation for coarticulation (LCfC). Previous LCfC studies have shown that a lexically restored context phoneme (e.g., /s/ in Christma#) can alter the perceived place of (...) articulation of a subsequent target phoneme (e.g., the initial phoneme of a stimulus from a tapes-capes continuum), consistent with the influence of an unambiguous context phoneme in the same position. Because this phoneme-to-phoneme compensation for coarticulation is considered sublexical, scientists agree that evidence for LCfC would constitute strong support for top–down interaction. However, results from previous LCfC studies have been inconsistent, and positive effects have often been small. Here, we conducted extensive piloting of stimuli prior to testing for LCfC. Specifically, we ensured that context items elicited robust phoneme restoration (e.g., that the final phoneme of Christma# was reliably identified as /s/) and that unambiguous context-final segments (e.g., a clear /s/ at the end of Christmas) drove reliable compensation for coarticulation for a subsequent target phoneme. We observed robust LCfC in a well-powered, preregistered experiment with these pretested items (N = 40) as well as in a direct replication study (N = 40). These results provide strong evidence in favor of computational models of spoken word recognition that include top–down feedback. (shrink)

Avia Pasternak argues that intentional citizens who are genuine participants of their state should share the liability for state wrongdoings. In real-world states, how prevalent is intentional citizenship? This commentary concerns the application of the theoretical model. I argue that there are two problems with Pasternak’s proposal of testing intentional citizenship in reality. First, the difficulty of distinguishing citizens’ ambiguous internal attitudes towards their citizenship is underestimated. Second, the objective aspect of citizens’ status in society, namely, the way they are (...) treated by their state, is more important than their subjective attitudes, but this aspect is neglected by Pasternak. (shrink)

In multi-armed bandit problems, information acquired from experimentation is valuable because it tells the agent whether to select a particular option again in the future. This article tests whether people undervalue this information because they are ambiguity averse, or have a distaste for uncertainty about the average quality of each alternative. It is shown that ambiguity averse agents have lower than optimal Gittins indexes, appearing to undervalue information from experimentation, but are willing to pay more than (...) class='Hi'>ambiguity neutral agents to learn the true mean of the payoff distribution, appearing to overvalue objectively given information. This prediction is tested with a laboratory experiment that elicits a Gittins index and a willingness to pay on six two-armed bandits. Consistent with the predictions of ambiguity aversion, the Gittins indexes are significantly lower than optimal and willingnesses to pay are significantly higher than optimal. (shrink)

For years, the number of opaque algorithmic decision-making systems (ADM systems) with a large impact on society has been increasing: e.g., systems that compute decisions about future recidivism of criminals, credit worthiness, or the many small decision computing systems within social networks that create rankings, provide recommendations, or filter content. Concerns that such a system makes biased decisions can be difficult to investigate: be it by people affected, NGOs, stakeholders, governmental testing and auditing authorities, or other external parties. Scientific testing (...) and auditing literature rarely focuses on the specific needs for such investigations and suffers from ambiguous terminologies. With this paper, we aim to support this investigation process by collecting, explaining, and categorizing methods of testing for bias, which are applicable to black-box systems, given that inputs and respective outputs can be observed. For this purpose, we provide a taxonomy that can be used to select suitable test methods adapted to the respective situation. This taxonomy takes multiple aspects into account, for example the effort to implement a given test method, its technical requirement (such as the need of ground truth) and social constraints of the investigation, e.g., the protection of business secrets. Furthermore, we analyze which test method can be used in the context of which black box audit concept. It turns out that various factors, such as the type of black box audit or the lack of an oracle, may limit the selection of applicable tests. With the help of this paper, people or organizations who want to test an ADM system for bias can identify which test methods and auditing concepts are applicable and what implications they entail. (shrink)

This thesis examines procedures for ascribing ambiguity to particular sentences and words of a language. My discussion focuses on theories advanced by Keith Donnellan, Saul Kripke and David Kaplan regarding the alleged referential/attributive ambiguity of definite descriptions, and on arguments offered by Paul Ziff, David Wiggins and Jerrold Katz concerning the ambiguity of the word 'good'. I distinguish two kinds of semantic ambiguity, which I call "strong" and "weak", and develop a theoretical model of the former. (...) Using this model, I devise and evaluate a number of theoretically related practical tests designed to detect the presence of ambiguity in concrete cases. I argue against direct appeals to our intuitions of meaning, to Occam's Razor, to grammatical analyses and to foreign languages in settling disputed ascriptions of ambiguity. I favor procedures which indirectly test our intuitions of meaning by isolating the linguistic effects of mixing and shifting senses. My tests rely on the assumption that the effects which accompany the use of truly ambiguous expressions are distinguishable from the mere pragmatic uncertainty which permeates general language use. Semantically ambiguous terms are viewed as awkward linguistic devices whose use, for example, will occasionally produce humor, as in the case of a pun, or deceptively bad reasoning. The account I develop rests heavily on the traditional theory of meaning , and to the extent that the standards I erect furnish better evidence for an ascription of semantic ambiguity, to that extent they ratify the classical analysis of meaning. (shrink)

Some researchers interested in assessing moral reasoning among business practitioners or students have developed their own vignettes or scenarios set in business contexts, based on assumptions that the situations presented in the often-used Defining Issues Test (DIT) will somehow be inappropriate for these specific types of respondents. This paper is the first to examine in depth both the actual details contained in these business-oriented scenarios and empirical findings emerging from them. Among this paper’s conclusions are: (1) assumptions underpinning the presumed (...) superiority of business-oriented vignettes have yet to be tested; (2) the DIT possesses considerable advantages unavailable in alternative measures; (3) many business-oriented scenarios have underlying Dilemma themes that seem inherently ambiguous and thus of questionable relevance for assessing moral reasoning; (4) these scenarios have no obvious equivalent in the DIT and thus cannot definitively be placed under the umbrella of the latter’s demonstrated construct validity; and (5) meaningful empirical findings have not clearly emerged from investigations using business-oriented vignettes. In light of these conclusions, we recommend that investigators interested in moral reasoning advance knowledge in a coherent and unified way by using the DIT that seems entirely appropriate for use among respondents with business experience or training. Although alternative measures may have value for assessing ethical judgments, evidence of their validity as a measure of moral reasoning is lacking. (shrink)

Decision-making capacity (DMC) is the gatekeeping element for a patient’s right to self-determination with regard to medical decisions. A DMC evaluation is not only conducted on descriptive grounds but is an inherently normative task including ethical reasoning. Therefore, it is dependent to a considerable extent on the values held by the clinicians involved in the DMC evaluation. Dealing with the question of how to reasonably support clinicians in arriving at a DMC judgment, a new tool is presented that fundamentally differs (...) from existing ones: the U-Doc. By putting greater emphasis on the judgmental process rather than on the measurement of mental abilities, the clinician as a decision-maker is brought into focus, rendering the tool more of an evaluation guide than a test instrument. In a qualitative study, the perceived benefits of and difficulties with the tool have been explored. The findings show on the one hand that the evaluation aid provides basic orientation, supports a holistic perspective on the patient, sensitizes for ethical considerations and personal biases, and helps to think through the decision, to argue, and to justify one’s judgment. On the other hand, the room for interpretation due to absent operationalisations, related ambiguities, and the confrontation with one’s own subjectivity may be experienced as unsettling. (shrink)

This study aimed to validate career decision ambiguity tolerance scale-Korean form applicable to a Korean sample. In study 1, 17 items from the original 18-item career decision ambiguity tolerance scale were valid based on IRT. In study 2, using the confirmatory factor analysis, we showed that excluding item 4 from the original scale is better than including it in the three factors model. Given the results of study 1 and 2, the constructs in the 17-item career decision (...) class='Hi'>ambiguity tolerance scale-Korean form were valid. In study 3, career decision ambiguity tolerance positively predicted career decision-making self-efficacy, career indecision, and career adaptability respectively, after controlling for calling and career search self-efficacy. Thus, the incremental validity of the career decision ambiguity tolerance scale-Korean form was ensured. In study 4, the reliability of the scale was retained as the test-retest (conducted over a 4-week period) demonstrated adequate results. (shrink)

Perception of music and speech is based on similar auditory skills, and it is often suggested that those with enhanced music perception skills may perceive and learn novel words more easily. The current study tested whether music perception abilities are associated with novel word learning in an ambiguous learning scenario. Using a cross-situational word learning (CSWL) task, nonmusician adults were exposed to word-object pairings between eight novel words and visual referents. Novel words were either non-minimal pairs differing in all sounds (...) or minimal pairs differing in their initial consonant or vowel. In order to be successful in this task, learners need to be able to correctly encode the phonological details of the novel words and have sufficient auditory working memory to remember the correct word-object pairings. Using the Mistuning Perception Test (MPT) and the Melodic Discrimination Test (MDT), we measured learners’ pitch perception and auditory working memory. We predicted that those with higher MPT and MDT values would perform better in the CSWL task and in particular for novel words with high phonological overlap (i.e., minimal pairs). We found that higher musical perception skills led to higher accuracy for non-minimal pairs and minimal pairs differing in their initial consonant. Interestingly, this was not the case for vowel minimal pairs. We discuss the results in relation to theories of second language word learning such as the Second Language Perception model (L2LP). (shrink)

Recent anxieties about the deterioration of the global environment have had the effect of intensifying the ambiguity that surrounds the social roles of scientists and engineers. This has happened not merely, as suggested at the outset, because the environmental crisis has made their roles more conspicuous. Nor is it merely because recent disasters have alerted us to new, or hitherto unrecognized, social consequences of using the latest science-based technologies. What also requires recognition is that ideas about the social role (...) of modern science and engineering are embedded in, hence mediated by, larger views of the world. Within such American worldviews, moreover, the status of science and engineering is closely bound up with their perceived effect upon the environment.In the dominant culture, accordingly, the respect given to scientists and engineers is in large measure dependent on their ability to play the central role assigned to them in the historical narrative about progress. As the ostensible heroes of that popular story, they are expected to lead the way in realizing the promise of prosperity and general well-being. The environmental crisis surely has diminished the credibility of that story, thereby causing the social role of science and engineering to seem more dubious — more ambiguous. To be sure, the crisis also may have the effect, for very different reasons, of increasing the power and responsibility of organized science. But the late twentieth-century task of damage control cannot possibly elicit anything like the respect accorded to organized science by the earlier belief in progress.It also is important to recall, finally, that the narrative of progress itself has undergone a disillusioning transformation. The early Enlightenment version of the story depicted scientists and engineers working in the service of a social and political ideal that all people could share. But the later technocratic concept of progress, with its sterile instrumentalist notion of advancing the power of science-based technology as an end in itself, is far less likely to inspire trust. Its patent inadequacies have had the effect of enhancing the appeal, if only by contrast, of the seemingly “anti-science” ideologies of pastoralism and primitivism. All of which might be taken to suggest that if the scientific and engineering professions want to recover some of the respect and status they once had, they would be well advised to join with sympathetic humanists and social scientists in recuperating some of the idealism that the project of modern science formerly derived from its place within the ideology of progress. That might entail the sacrifice of their technocratic posture of neutrality, dissociating themselves from people and institutions responsible for environmental degradation, and their help in formulating a new concept — which is to say, new criteria — of progress to which they might commit themselves. A primary test of any proposed social policy under this new dispensation surely would be whether it would improve, or at a minimum protect, the life-enhancing capacities of the global ecosystem. *** DIRECT SUPPORT *** A8402064 00011 *** DIRECT SUPPORT *** A8402064 00012 *** DIRECT SUPPORT *** A8402064 00013. (shrink)

We investigated the key anatomical structures mediating interhemispheric integration during the perception of apparent motion across the retinal midline. Previous studies of commissurotomized patients suggest that subcortical structures mediate interhemispheric transmission but the specific regions involved remain unclear. Here, we exploit interindividual variations in the propensity of normal subjects to perceive horizontal motion, in relation to vertical motion. We characterize these differences psychophysically using a Dynamic Dot Quartet (an ambiguous stimulus that induces illusory motion). We then tested for correlations between (...) a tendency to perceive horizontal motion and fractional anisotropy (FA) (from structural diffusion tensor imaging), over subjects. FA is an indirect measure of the orientation and integrity of white matter tracts. Subjects who found it easy to perceive horizontal motion showed significantly higher FA values in the pulvinar. Furthermore, fiber tracking from an independently identified (subject-specific) visual motion area converged on the pulvinar nucleus. These results suggest that the pulvinar is an anatomical hub and may play a central role in interhemispheric integration. (shrink)

Cross‐situational word learning (XSWL) tasks present multiple words and candidate referents within a learning trial such that word–referent pairings can be inferred only across trials. Adults encode fine phonological detail when two words and candidate referents are presented in each learning trial (2 × 2 scenario; Escudero, Mulak, & Vlach, ). To test the relationship between XSWL task difficulty and phonological encoding, we examined XSWL of words differing by one vowel or consonant across degrees of within‐learning trial ambiguity (1 (...) × 1 to 4 × 4). Word identification was assessed alongside three distractors. Adults finely encoded words via XSWL: Learning occurred in all conditions, though accuracy decreased across the 1 × 1 to 3 × 3 conditions. Accuracy was highest for the 1 × 1 condition, suggesting fast‐mapping is a stronger learning strategy here. Accuracy was higher for consonant than vowel set targets, and having more distractors from the same set mitigated identification of vowel set targets only, suggesting possible stronger encoding of consonants than vowels. (shrink)

Ambiguity is intrinsic to life. Yet, mainstream accountability theory reduces its area of application by not taking ambiguity seriously. The literature treats too many aspects as exogenous to politics and is unlikely to capture accountability dynamics in contemporary representative democracies in transformation, including the European Union. Theorizing accountability requires going beyond predetermined principals and agents, detecting deviance from authoritative orders and rules, and disciplining unruly agents. An institutional perspective is offered, relaxing assumptions regarding what accountability means and implies; (...) what is involved in demanding, rendering, assessing and responding to accounts; what factors foster effective accountability; and how accountability regimes emerge and change. The fluidity and unresolved conflicts of political life make it difficult to correctly assign causal responsibility and to learn from experience. Accountability processes, nevertheless, provide occasions for searching for and testing collective purpose, intelligence, meaning and political equality, as part of institutionalization and de-institutionalization processes. (shrink)

Programs of drug testing welfare recipients are increasingly common in US states and have been considered elsewhere. Though often intensely debated, such programs are complicated to evaluate because their aims are ambiguous – aims like saving money may be in tension with aims like referring people to treatment. We assess such programs using a proportionality approach, which requires that for ethical acceptability a practice must be: reasonably likely to meet its aims, sufficiently important in purpose as to outweigh harms incurred, (...) and lower in costs than feasible alternatives. In the light of empirical findings, we argue that the programs fail the three requirements. Pursuing recreational drug users is not important in the light of costs incurred, while dependent users who may require referral are usually identifiable without testing and typically need a broader approach than one focussing on drugs. Drug testing of welfare recipients is therefore not ethically acceptable policy. (shrink)

The case outlined below is the basis for the In That Case section of the “Ethics and Epistemology of Big Data” symposium. Jordan receives reports from two separate personal genomic tests that provide intriguing data about ancestry and worrying but ambiguous data about the potential risk of developing Alzheimer’s disease. What began as a personal curiosity about genetic inheritance turns into an alarming situation of medical uncertainty. Questions about Jordan’s family tree are overshadowed by even more questions about Alzheimer’s (...) disease and healthy ageing. As a parent, Jordan is unsure whether to share these results and what it would mean for their children to learn about their genetic inheritance and potential future health. Furthermore, Jordan is unsure how to make sense of these reports in light of current knowledge of the risk factors for Alzheimer’s disease and in the absence of effective treatments or robust preventative guidelines. (shrink)

Fundamental terms in the field of ecology are ambiguous, with multiple meanings associated with them. While this could lead to confusion, discord, or even tests that violate core assumptions of a given theory or model, this ambiguity could also be a feature that allows for new knowledge creation through the interconnected nature of concepts. We approached this debate from a quantitative perspective, and investigated the cost of ambiguity related to definitions of ecological units in ecology related to (...) the general term “community.” We did a meta-analysis of tests associated with two bodies of literature, Hubbell’s unified neutral theory of biodiversity and biogeography and Diamond’s assembly rules, that rely on a specific ecological unit that assumes that species are existing within a local area and that they have overlapping resource needs. We predicted that if ambiguous terminology is widespread, then researchers will have tested them with many different ecological units, that in addition some of these ecological units will violate the core assumptions of the theory, and finally that the overall level of support for a theory will be stronger if appropriate ecological units were used. We found that indeed multiple different ecological units were used in the literature to test both theories, with 65 percent appropriate ecological units for neutral theory tests, and only 6 percent for assembly rule tests. Finally, there was some evidence that the support for a theory depended on whether appropriate ecological units were used for neutral tests, but there was not enough data for the assembly rule tests. These results thus show that ambiguous terminology in ecology is having measurable effects on research and is not of solely philosophical concern. We advocate that authors be explicit in their writing and outline core assumptions of theories, that researchers apply these consistently in their tests, and that readers be attentive to what is written and cognizant of their potential biases. (shrink)

We tested the hypothesis that perception of an alternative image in ambiguous figures would be manifest as high-frequency (gamma) components that become synchronized over multiple scalp sites as a ''cognitive binding'' process occurs. For 171 combinations of data from 19 electrodes, obtained from 17 subjects and 10 replicate stimuli, we calculated the difference in correlation between the response to first seeing an ambiguous figure and when the alternative percept for that figure became consciously realized (cognitively bound). Numerous statistically significant correlation (...) differences occurred in all frequency bands tested with ambiguous-figure stimulation, but not in two kinds of control data (a reaction-time test to sound stimuli and a no-task, mind-wandering test). Statistically significant correlation changes were widespread, involving frontal, parietal, central, and occipital regions of both hemispheres. Correlation changes were evident at each of five frequency bands, ranging up to 62.5 Hz. Most of the statistically significant correlation changes were not between adjacent sites but between sites relatively distant, both ipsilateral and contralateral. Typically, these correlation changes occurred in more than one frequency band. These results suggest that cognitive binding is a distinct mental state that is reliably induced by ambiguous-figure perception tasks. Coherent oscillations at multiple frequencies may reflect the mechanism by which such binding occurs. Moreover, different coherent frequencies may mediate different components of the total cognitive-binding process. (shrink)

In economics, it has often been claimed that testing choice data for violation of certain axioms-particularly if the choice data is observed under laboratory conditions-allows conclusions about the validity of certain preference axioms and the neoclassical maximization hypothesis. In this paper I argue that these conclusions are unfounded. In particular, it is unclear what exactly is tested, and the interpretation of the test results are ambiguous. Further, there are plausible reasons why the postulated choice axioms should not hold. Last, these (...) tests make implicit assumptions about beliefs that further blur the interpretations of the results. The tests therefore say little if anything about the validity of certain preference axioms or the maximization hypothesis. (shrink)

AbstractMany management theories have descriptive and normative elements, and no management theory used to generate prescriptions can be totally devoid of normative assumptions. Yet, there remain few useful models for assessing the relative strength or utility of the normative frameworks that inform most management theorizing. In this essay, we offer a model from a field of art rather than science. We introduce the poetry of early twentieth century American writer Hart Crane as providing such a model. Crane uses a panorama (...) of consequences to examine modern social phenomena and subject them to normative evaluation. We argue that management theorists can use a similar panorama of consequences method to “test” normative theories by assessing the directional consistency of the normative evaluations the theories generate about an empirical phenomenon or relationship, as well as how extensively the theories’ normative evaluations cover the full scope of a phenomenon’s or relationship’s impact. We explicate an exemplar poem of Crane’s, and then demonstrate how his method might be used to study shareholder activism, a normatively ambiguous management practice, in a way that illuminates the strengths and weaknesses of the relevant normative frameworks. (shrink)

We report an experimental test of the influence of ambiguity on behaviour in a coordination game. We study the behaviour of subjects in the presence of ambiguity and attempt to determine whether they prefer to choose an ambiguity-safe option. We find that this strategy, which is not played in either Nash equilibrium or iterated dominance equilibrium, is indeed chosen quite frequently. This provides evidence that ambiguity-aversion influences behaviour in games. While the behaviour of the Row Player (...) is consistent with randomising between her strategies, the Column Player shows a marked preference for avoiding ambiguity and choosing his ambiguity-safe strategy. (shrink)