Mechanism schemata are one of the least understood parts of MDC’s account of mechanistic explanation. Relatedly, there is a common misconception that there is no place for abstraction in MDC mechanisms. These two problems can be remedied by looking more carefully at what MDC say both in their 2000 paper and elsewhere about schemata and abstraction, and by following up on a comment of Machamer’s indicating that Piaget was the inspiration for schemata. Darden’s work on (...) class='Hi'>mechanism discovery reveals an important role for abstract mechanism schemata, not only as concise representations of known mechanisms, but also as hypotheses for how unknown mechanisms might work. Piaget’s schemata likewise both capture the developing child’s current state of knowledge, and serve as templates into which new experiences are fit. If we assume that mechanistic explanations should pick out real difference-makers, and that what makes a difference needn’t always be fine-grained details, we open up an explanatory role for abstract schemata to play. Schemata represent the coarser-grained features of mechanisms that are often among the most important difference-makers. In many contexts they might need to be supplemented with finer grained details in order to give an adequate explanation, but independent of those details, schemata remain explanatory in virtue of being part of the explanation. Detailed accounts of real difference-makers need not be seen as in competition with abstract models or generalizations. They can be combined in mechanistic explanations. (shrink)

This paper discusses the prospect of the "new social history" guided by the recent work of Charles Tilly on the methodology of social and historical explanation. Tilly advocates explanation by mechanisms as the alternative to the covering law explanation. Tilly's proposals are considered to be the attempt to reshape the practices of social and historical explanation following the example set by the explanatory practices of molecular biology, neurobiology, and other recent "success stories" in the life sciences. Recent work in the (...) philosophy of science on these practices by Peter Machamer, Lindley Darden, Carl Craver and others is used as the foil to disclose the difficulties of Tilly's project. Most important among them is the dilemma of specification: if diagrams (standard forms of the representation of mechanisms) are intended as representations of robust causal processes, they cannot be specific enough to provide complete mechanism schemata, and are bound to remain mechanism sketches. If mechanism sketches are elaborated in detail by tracing particular causal processes, they provide representations of fragile causal processes, which cannot be considered as mechanisms comparable to those in advanced life and other special sciences. Tilly's work on the explanation of mechanisms can be considered as symptomatic for the recent trend to visualize the forms of historical representation. As far as diagrams seem to be able to communicate stories in a direct way (without narrative discourse), this trend is a challenge for the theory of historical representation. The new theories of scientific explanation focusing on the explanatory practices of the life sciences can provide examples and be the source of inspiration for the work on the theory of historical and social explanation, going beyond the confines of the received framework of the covering law model of explanation. (shrink)

I argue that both language acquisition and cultural and social factors contribute to the formation of schemata that facilitate false belief reasoning. While the proposal for an active role of language acquisition in this sense has been partially advanced by several voices in the mentalizing debate, I argue that other accounts addressing this issue present some shortcomings. Specifically, I analyze the existing proposals distinguishing between “structure-oriented” views :1858–1878, 2007; de Villiers in Why language matters for theory of mind. Oxford (...) University Press, New York, pp 186–219, 2005), that stress the role of language as a set of rules providing syntactic input and providing a representational format, and “cultural/social-oriented views”, that stress the role of social interaction. Starting from the analysis of these views, I defend my own account of the role of language acquisition in aiding false belief reasoning. I argue that language acquisition plays a pivotal role in the formation of schemata used by pre-schoolers to pass the false belief task. I propose a specific learning mechanism for exploiting linguistic information that taps into specific cognitive abilities, thus making a very concrete suggestion about the role of linguistic input in specific cultural contexts for the development of false belief skills. (shrink)

The master-module theory of consciousness is considered in the light of experimental evidence that has emerged since the model was first published. It is found that these new results tend to strengthen the original hypothesis. It is also argued that the master module is involved in generation of the schemata previously postulated to be associated with consciousness . The recent discovery of attention-related activity in the thalamic intralaminar nuclei is taken to indicate that these structures constitute an important part (...) of the feedback loop which the theory conjectured to mediate thought. The theory is shown to lead to a remarkably simple rationalization of the cerebral cortex, and it offers explanations of attention, binocular rivalry and qualia. It also makes the surprising prediction that Broca's area might not exclusively serve speech. (shrink)

Sleep enhances integration across multiple stimuli, abstraction of general rules, insight into hidden solutions and false memory formation. Newly learned information is better assimilated if compatible with an existing cognitive framework or schema. This article proposes a mechanism by which the reactivation of newly learned memories during sleep could actively underpin both schema formation and the addition of new knowledge to existing schemata. Under this model, the overlapping replay of related memories selectively strengthens shared elements. Repeated reactivation of (...) memories in different combinations progressively builds schematic representations of the relationships between stimuli. We argue that this selective strengthening forms the basis of cognitive abstraction, and explain how it facilitates insight and false memory formation. (shrink)

Machamer, Darden, and Craver's account of the nature and role of mechanisms in the special sciences has been very influential. Unfortunately, a confusing array of ontic, epistemic, and pragmatic distinctions is required to individuate their mechanisms, mechanism schemata, and mechanism sketches. I diagnose this as a conflation of token-level causal relations with type-level relations. I propose instead that a mechanism is an abstraction that relates entity types and activity types on the model of a directed graph. (...) Mechanisms have an ontic status distinct from the causal chains of token entities and token activities that instantiate them. (shrink)

Cybernetics promoted machine-supported investigations of adaptive sensorimotor behaviours observed in biological systems. This methodological approach receives renewed attention in contemporary robotics, cognitive ethology, and the cognitive neurosciences. Its distinctive features concern machine experiments, and their role in testing behavioural models and explanations flowing from them. Cybernetic explanations of behavioural events, regularities, and capacities rely on multiply realizable mechanism schemata, and strike a sensible balance between causal and unifying constraints. The multiple realizability of cybernetic mechanism schemata paves (...) the way to principled comparisons between biological systems and machines. Various methodological issues involved in the transition from mechanism schemata to their machine instantiations are addressed here, by reference to a simple sensorimotor coordination task. These concern the proper treatment of ceteris paribus clauses in experimental settings, the significance of running experiments with correct but incomplete machine instantiations of mechanism schemata, and the advantage of operating with real machines ??? as opposed to simulated ones ??? immersed in real environments. (shrink)

According to Philip Kitcher, scientific unification is achieved via the derivation of numerous scientific statements from economies of argument schemata. I demonstrate that the unification of selection phenomena across domains in which it is claimed to occur--evolutionary biology, immunology and, speculatively, neurobiology--is unattainable on Kitcher's view. I then introduce an alternative method for rendering the desired unification based on the concept of a mechanism schema. I conclude that the gain in unification provided by the alternative account suggests that (...) Kitcher's view is defective. (shrink)

The book is thought-provoking and informative, wide in scope while also being technically detailed, and still relevant to modem AI [at least as of 1998, the time of writing this review, but probably also at the time of posting this entry here, 2023] even though it was published in 1989. This relevance lies mainly in the book’s advocacy of distributed computation at multiple levels of description, its combining of neural networks and other techniques, its emphasis on the interplay between action (...) and perception, and its particular approach to natural language processing. The criticisms I have occasionally made above are relatively minor, and one of the major shortcomings of schema theory at least at the time of the book’s publication -- namely the lack of a detailed, preferably neural, mechanism for schema instantiation -- is one of which Arbib is well aware. The book is well produced, for the most part clearly written, and has useful summaries at the beginning of each chapter. Both general readers and AI researchers (mainly but not exclusively those working on robotics, vision and neural networks) could benefit from reading the book. (shrink)

In this article I explain why scientists cannot always resolve their disagreements about experiments even if they do not hold conflicting theoretical assumptions, and how incommensurability in experiments can occur even if experiments are not deeply encumbered by theoretical assumptions. On the basis of recent discoveries in cognitive psychology and an extended analysis of a historical case, I explore a cognitive mechanism that may generate incommensurability in experiment appraisal. I find that, because of the involvement of goal-derived categories, incommensurability (...) in experiments may result from the conflict of goals that scientists pursue in their researches, from the differences of goal-derived classification schemata that they employ in analyzing experiments, and from discrepancies between skills that they have developed in their practices. This account differs from the conventional interpretation of Kuhn’s thesis, which attributes the cause of incommensurability solely to theoretical differences. In the conclusion, I further discuss the implications of this new account of incommensurability for both philosophical and historical studies of science. (shrink)

The organ of the memory was of crucial importance for Robert Hooke in his aim to improve natural history and the study of nature in general. As a mechanist he was careful to avoid the confident analogizing of his contemporaries, and he described his model in hypothetical form. However, he saw it as amenable to improvement—just as mechanically as the senses were augmented by the use of instruments. The close connection he made between a better memory mechanism and the (...) task of ‘perfecting’ the study of natural philosophy can be seen in a whole range of his activities. These included his discussion of the memory as an epistemological tool, his frequent use of devices such as lists and schemata for ordering aspects of nature and his personal memoranda. His diary, by acting as a stimulant to memory, should be seen as an integral part of his attempt to become a better natural philosopher. Both the act of daily inscription and the ordering of occurrences for effective later recall would improve his memory and his performance of his life's task as a philosopher of nature. (shrink)

We propose that the fundamental mechanism underlying resilience is the integration of novel or negative experiences into internal schemata. This process requires a switch from reactive to predictive control modes, from the brain's salience network to the default mode network. Reappraisal, among other mechanisms, is suggested to facilitate this process.

Grice in pragmatics and Levelt in psycholinguistics have proposed models of human communication where the starting point of communicative action is an individual intention. This assumption, though, has to face serious objections with regard to the alleged existence of explicit representations of the communicative goals to be pursued. Here evidence is surveyed which shows that in fact speaking may ordinarily be a quite automatic activity prompted by contextual cues and driven by behavioural schemata abstracted away from social regularities. On (...) the one hand, this means that there could exist no intentions in the sense of explicit representations of communicative goals, following from deliberate reasoning and triggering the communicative action. On the other hand, however, there are reasons to allow for a weaker notion of intention than this, according to which communication is an intentional affair, after all. Communicative action is said to be intentional in this weaker sense to the extent that it is subject to a double mechanism of control, with respect both to present-directed and future-directed intentions. (shrink)

This article focuses on a set of problems involving a controversial portion of the HHA that describes the performance of the Delian chorus in a rare instance of early performance criticism. First, the two variants for a key noun in line 162, bambaliastus and krembaliastus, are discussed. Skepticism is expressed about the applicability to this scene of the first variant . On the contrary, krembaliastus—the suitability of which has not been discussed in detail, even by scholars who seem to have (...) favored it—can make good sense. Literary and iconographic evidence makes it plausible that krembaliastus denotes the act of generating through percussion devices called krembala rhythmic patterns meant to govern stylized movement, what the Greeks called schêmata. The marked term krembaliastus was probably employed to evoke a characteristic trait of the highly skilled Deliades. Furthermore, as vocal and kinetic activities were inextricably linked in choral practices, they are ultimately conceptualized as part of the same unified expressive mechanism . The author also questions the conventional interpretation of mimeisthai as “mimicking,” instead reading it as “representation,” involving the evocation of the essence of an entity but not necessarily exact reproduction of its formal details. Finally the essay argues that the Delian chorus' art of “knowing how to represent the voices and the rhythmic patterns of all people” designates the perfection of choral performance, as an all-inclusive enactment that forms a powerful trans-local bond. (shrink)

This commentary concludes that Bartlett took a functional approach to psychological theory. He hypothesized that schemata are active, holistic, unconscious, and show emergent properties. He provided no mechanism for going from episodic instances to a holistic schema or for the long-term retention of information in memory. Modern schema theories reject Bartlett's holism and interpret his hypothesis that schemata are active in terms of the active nature of top-down processes in memory and perception. Modern schema theories use the (...) construct of instantiation to account for memory of specific schema-related information and also postulate unconscious, generic memory structures to account for the impact of old knowledge on human cognitive processing. (shrink)

Whitehead and others have decried the ,,bifurcation of nature“, that is, the split between the world depicted by science, which lacks such phenomena as purpose, meaning, and value, and the world of human experience, which is largely constituted by those same phenomena. In order to guide our thinking about how this split might possibly be overcome, I propose three guiding principles, which I hope will be widely accepted: (1) The reality of the human world; (2) The cognitive excellence of empirical (...) science; and (3) The unification of knowledge. All three of these principles are eminently reasonable, and yet they appear to form an inconsistent triad. Naturalism, as the metaphysical worldview extrapolated from empirical science, is distinguished from empirical science as such. I propose that the only way to reconcile the three guiding principles is to reform naturalism in such a way as to recognize the objective reality of biological purpose. Such a reform in the foundations of biology might then provide us with a foundation for reconstructing our view of the human world. The argument in support of this proposed reform proceeds in two stages. First, as pars destruens, I show that naturalism as usually construed is anyway untenable, because the two chief theories by means of which biological purpose is supposed to be reduced to mechanism - the theory of natural selection and the theory of cybernetic control - fail as reductive schemas because each theory tacitly presupposes purpose at a crucial point in its explanatory structure. Second, as pars construens, I discuss the possibility of using some concepts borrowed from nonlinear dynamics and condensed-matter physics as a way of directly representing biological purpose as a real, emergent phenomenon. Finally, I end with a brief reflection on the implications of the doctrine of ontological emergence for the principle of the unification of knowledge. German Whitehead und andere Autoren haben die ,,Verzweigung der Natur“, d. h. die Kluft zwischen der von den Naturwissenschaften beschriebenen Welt, die keine Phänomene der Art von Zielen, Bedeutung und Wert enthält, und der Welt der menschlichen Erfahrung, die weitgehend von eben diesen Phänomenen konstituiert ist, beklagt. Um unsere Überlegungen darüber, wie diese Kluft eventuell überwunden werden kann, zu leiten, schlage ich drei Leitprinzipien vor, von denen ich hoffe, daß sie weitgehend akzeptiert werden: (1) die Realität der menschlichen Welt; (2) die kognitive Exzellenz der empirischen Wissenschaft; und (3) die Vereinheitlichung der Erkenntnis. Alle drei Prinzipien scheinen in hohem Masse vernünftig, und dennoch scheinen sie eine inkonsistente Triade zu bilden. Der Naturalismus als die metaphysische Weltauffassung, die aus der empirischen Wissenschaft extrapoliert wird, sollte von der empirischen Wissenschaft als solcher unterschieden werden. Ich schlage vor, daß die einzige Art und Weise, die drei Leitprinzipien zu versöhnen, in einer Reform des Naturalismus besteht derart, daß die objektive Realität biologischer Zielsetzung anerkannt wird. Eine solche Reform in den Grundlagen der Biologie kann dann eine Grundlage bilden für eine Rekonstruktion unserer Auffassung der menschlichen Welt. Das Argument für die vorgeschlagene Reform geht nach zwei Stufen vor. Zuerst, als pars destruens, zeige ich, daß der Naturalismus in seiner üblichen Fassung sowieso unannehmbar ist, weil die zwei hauptsächlichen Theorien, durch welche biologische Zielsetzung angeblich auf einen Mechanismus reduziert werden kann - die Theorie der natürlichen Selektion und die Theorie der kybernetischen Kontrolle - keineswegs als reduktive Schemata taugen, weil jede Theorie stillschweigend Zielsetzung an einer entscheidenden Stelle ihre erklärenden Struktur voraussetzt. Zweitens, als pars construens, diskutiere ich die Möglichkeit, bestimmte Begriffe aus der nichtlinearen Dynamik und aus der Festkörperphysik einzusetzen, um biologische Zielsetzung als ein reales, emergentes Phänomen direkt zu repräsentieren. Ich schließe den Aufsatz mit einer kurzen Reflektion über die Konsequenzen der Lehre der ontologischen Emergenz für das Prinzip der Vereinheitlichung der Erkenntnis ab. (shrink)

Personality disorders are usually treated with face-to-face sessions and/or digital mental health services. Among many schools of therapies, schema therapy stands out because rather than simply targeting the symptoms of PD, it cordially targets the cause of PD and heals the early maladaptive schema, thus is exceptionally good at soothing emotional disturbances before enacting cognitive restructuring, resulting in long-term efficacy. However, according to Piaget’s genetic epistemology, the unmet needs lie in the fact that the schemata that determine the adaptive (...) behavior can only be formed in the interaction with the real world that the patient is living in and reconsolidated by the feedback from the object world upon the patient’s newly-formed behavior. Therefore, in order to reshape the patient’s schema modes to support adaptive behavior and regain emotional regulation capabilities of the healthy adult, one may have to reconstruct the object world surrounding the patient. Metaverse, the bestowed successor to the Internet with the cardinal feature of “the sense of full presence,” can become a powerful tool to reconstruct a new object world for the patient with the prescription of a psychotherapist, so as to transform the treatment techniques in schema therapy into the natural autobiographical experiences of patients in the new object world, thus gradually reshape the patient’s schema modes that can ultimately result in an adaptive, and more inclusive, interaction with the real world. This work describes the underlying theory, the mechanism, the process, and ethical considerations of such promising technology for the not-too-far future. (shrink)

The book examines the psycho-religious mechanism behind the violent extremism of suicide attacks in the post-9/11 world. It employs the mindsponge concept, an original dataset, and original research results obtained from the authors' statistical investigations using the Hamiltonian Markov chain Monte Carlo technique. It provides insights and implications for policymakers and strategists in their efforts to engage in peace talks and reduce violent conflicts worldwide.

Can the phenomenal character of perceptual experience be altered by the states of one's cognitive system, for example, one's thoughts or beliefs? If one thinks that this can happen then one thinks that there can be cognitive penetration of perceptual experience; otherwise, one thinks that perceptual experience is cognitively impenetrable. I claim that there is one alleged case of cognitive penetration that cannot be explained away by the standard strategies one can typically use to explain away alleged cases. The case (...) is one in which it seems subjects' beliefs about the typical colour of objects affects their colour experience. I propose a two-step mechanism of indirect cognitive penetration that explains how cognitive penetration may occur. I show that there is independent evidence that each step in this process can occur. I suspect that people who are opposed to the idea that perceptual experience is cognitively penetrable will be less opposed to the idea when they come to consider this indirect mechanism and that those who are generally sympathetic to the idea of cognitive penetrability will welcome the elucidation of this plausible mechanism. (shrink)

Each of us bears a unique name given to us at birth. When people use your name, they typically refer to you. But what is the linkage that ties a name to a person and hence allows it to refer? Li's book approaches this question of reference empirically through the medium of referential intuitions. Building on the literature on philosophical and linguistic intuitions, she proposes a linguistic-competence-based account of referential intuitions. Subsequently, using a series of novel experiments, she investigates the (...) variation of referential intuitions across different cultures, as well as the developmental trajectory and the underlying causes of the observed cultural differences. What she finds is that the cultural patterns of referential intuitions are already in place around age seven, and the differences are largely attributable to the distinct perspective taking strategies favoured by easterners and westerners, rather than the moral valence of actions involved in the experimental materials. These results are taken to better support referential pluralism (in particular, the ambiguous view) than referential monism. By undertaking this fascinating research, Li's book provides new insights into the cognitive mechanisms underlying people's referential usage of names. It will be valuable to students and scholars of linguistics, philosophy of language and experimental philosophy, and in particular, to those who research into semantic intuitions and theories of reference. (shrink)

I argue that the feeling that one is the owner of his or her mental states is not an intrinsic property of those states. Rather, it consists in a contingent relation between consciousness and its intentional objects. As such, there are (a variety of) circumstances, varying in their interpretive clarity, in which this relation can come undone. When this happens, the content of consciousness still is apprehended, but the feeling that the content “belongs to me” no longer is secured. I (...) discuss the implications of a mechanism enabling personal ownership for understanding a variety of clinical syndromes as well normal mental function. (shrink)

In the 1950s and 1960s, an interfield interaction between molecular biologists and biochemists integrated important discoveries about the mechanism of protein synthesis. This extended discovery episode reveals two general reasoning strategies for eliminating gaps in descriptions of the productive continuity of mechanisms: schema instantiation and forward chaining/backtracking. Schema instantiation involves filling roles in an overall framework for the mechanism. Forward chaining and backtracking eliminate gaps using knowledge about types of entities and their activities. Attention to mechanisms highlights salient (...) features of this historical episode while providing general reasoning strategies for mechanism discovery. (shrink)

Stuart Glennan, and the team of Peter Machamer, Lindley Darden, and Carl Craver have recently provided two accounts of the concept of a mechanism. The main difference between these two versions rests on how the behavior of the parts of the mechanism is conceptualized. Glennan considers mechanisms to be an interaction of parts, where the interaction between parts can be characterized by direct, invariant, change-relating generalizations. Machamer, Darden, and Craver criticize traditional conceptualizations of mechanisms which are based solely (...) on parts interacting and introduce a new conceptactivity. This essay is an attempt at carving out a relationship between these two philosophical interpretations of a mechanism. I will claim that, rather than being in conflict, Glennan's concept of interaction and Machamer, Darden, and Craver's notion of activity actually complement one another, each emphasizing a missing element of the other. (shrink)

The Higgs mechanism gives mass to Yang-Mills gauge bosons. According to the conventional wisdom, this happens through the spontaneous breaking of gauge symmetry. Yet, gauge symmetries merely reflect a redundancy in the state description and therefore the spontaneous breaking can not be an essential ingredient. Indeed, as already shown by Higgs and Kibble, the mechanism can be explained in terms of gauge invariant variables, without invoking spontaneous symmetry breaking. In this paper, we present a general discussion of such (...) gauge invariant treatments for the case of the Abelian Higgs model, in the context of classical field theory. We thereby distinguish between two different notions of gauge: one that takes all local transformations to be gauge and one that relates gauge to a failure of determinism. (shrink)

Following the experimental discovery of the Higgs boson, physicists explained the discovery to the public by appealing to analogies with condensed matter physics. The historical root of these analogies is the analogies to models of superconductivity that inspired the introduction of spontaneous symmetry breaking into particle physics in the early 1960s. We offer a historical and philosophical analysis of the analogies between the Higgs model of the electroweak interaction and the Ginsburg-Landau and Bardeen-Cooper-Schrieffer models of superconductivity, respectively. The conclusion of (...) our analysis is that both sets of analogies are purely formal in virtue of the fact that they are accompanied by substantial physical disanalogies. In particular, the formal analogies do not map the temporal, causal, or modal structures of SSB in superconductivity to temporal, causal, or modal structures in the Higgs model. These substantial physical disanalogies mean that analogies to models of superconductivity cannot supply the basis for the physical interpretation of EW SSB; however, an appreciation of the contrast between the physical interpretations of SSB in superconductivity and the Higgs model does help to clarify some foundational issues. Unlike SSB in superconductivity, SSB in the Higgs sector of the Standard Model is neither a temporal nor a causal process. We discuss the implications for the `eating' metaphor for mass gain in the Higgs model. Furthermore, the distinction between the phenomenological GL model and the dynamical BCS model does not carry over to EW models, which clarifies the desiderata for so-called `dynamical' models of EW SSB. Finally, the development of the Higgs model is an illuminating case study for philosophers of science because it illustrates how purely formal analogies can play a fruitful heuristic role in physics. (shrink)

I examine the construction process of the “Higgs mechanism” and its subsequent use by Steven Weinberg to formulate the electroweak theory of elementary particle physics. I characterize the development of the Higgs mechanism as a historical process that was guided through analogies drawn to the theories of solid-state physics and that was progressive through diverse contributions in the sixties from a number of physicists working independently. I also offer a detailed comparative study of the similarities and the differences (...) that exist between the approaches taken in these contributions. (shrink)

Fiona Macpherson (2012) argues that various experimental results provide strong evidence in favor of the cognitive penetration of perceptual color experience. Moreover, she proposes a mechanism for how such cognitive penetration occurs. We argue, first, that the results on which Macpherson relies do not provide strong grounds for her claim of cognitive penetrability; and, second, that, if the results do reflect cognitive penetrability, then time-course considerations raise worries for her proposed mechanism. We base our arguments in part on (...) several of our own experiments, reported herein. (shrink)

How did we come to have a scientific culture -- one in which cognitive values are shaped around scientific ones? Stephen Gaukroger presents a rich and fascinating investigation of the development of intellectual culture in early modern Europe, a period in which understandings of the natural realm began to fragment.

In recent years, developmental psychologists have increasingly been interested in various forms of prosocial behavior observed in infants and young children—in particular comforting, sharing, pointing to provide information, and spontaneous instrumental helping. We briefly review several models that have been proposed to explain the psychological mechanisms underpinning these behaviors. Focusing on spontaneous instrumental helping, we home in on models based upon what Paulus :77–81, 2014) has dubbed ‘goal-alignment’, i.e. the idea that the identification of an agent’s goal leads infants to (...) take up that goal as their own. We identify a problem with the most well-known model based upon this idea, namely the ‘goal contagion’ model. The problem arises from the way in which the model specifies the content of the goal which is identified and taken up. We then propose an alternative way of specifying the content of the goal, and use this as a starting point for articulating an alternative model based upon the idea of alignment, namely the ‘goal slippage’ model. By elucidating the difference between goal contagion and goal slippage, we contribute to the articulation of experimental criteria for assessing whether and when the mechanisms specified by these two models are at work. (shrink)

Although disoriented young children reorient themselves in relation to the shape of the surrounding surface layout, cognitive accounts of this ability vary. The present paper tests three theories of reorientation: a snapshot theory based on visual image-matching computations, an adaptive combination theory proposing that diverse environmental cues to orientation are weighted according to their experienced reliability, and a modular theory centering on encapsulated computations of the shape of the extended surface layout. Seven experiments test these theories by manipulating four properties (...) of objects placed within a cylindrical space: their size, motion, dimensionality, and distance from the space’s borders. Their findings support the modular theory and suggest that disoriented search behavior centers on two processes: a reorientation process based on the geometry of the 3D surface layout, and a beacon-guidance process based on the local features of objects and surface markings. Ó 2010 Elsevier Inc. All rights reserved. (shrink)