I respond to Norris et al.'s criticism of Gaskell and Marslen- Wilson (1997). When the latter's network is tested in circumstances comparable to the Merge simulations in the target article, it produces the desired pattern of results. In another area of potential feedback in spoken word processing, aspects of lexical content influence word recognition and our network provides a simple explanation of why such effects emerge. It is unclear how such effects would be accommodated by Merge.

Recent studies have documented substantial variability among typical listeners in how gradiently they categorize speech sounds, and this variability in categorization gradience may link to how listeners weight different cues in the incoming signal. The present study tested the relationship between categorization gradience and cue weighting across two sets of English contrasts, each varying orthogonally in two acoustic dimensions. Participants performed a four‐alternative forced‐choice identification task in a visual world paradigm while their eye movements were monitored. We found (...) that (a) greater categorization gradience derived from behavioral identification responses corresponds to larger secondary cue weights derived from eye movements; (b) the relationship between categorization gradience and secondary cue weighting is observed across cues and contrasts, suggesting that categorization gradience may be a consistent within‐individual property in speech perception; and (c) listeners who showed greater categorization gradience tend to adopt a buffered processing strategy, especially when cues arrive asynchronously in time. (shrink)

The prime objective of this paper is to conduct phoneme categorization experiments for Indian languages. In this direction a major effort has been made to categorize Hindi phonemes using a time delay neural network (TDNN), and compare the recognition scores with other languages. A total of six neural nets aimed at the major coarse of phonetic classes in Hindi were trained. Evaluation of each net on 350 training tokens and 40 test tokens revealed a 99% recognition rate for (...) vowel classes, 87% for unvoiced stops, 82% for voiced stops, 94.7% for semi vowels, 98.1% for nasals and 96.4% for fricatives. A new feature vector normalisation technique has been proposed to improve the recognition scores. (shrink)

A critical issue in perception is the manner in which top‐down expectancies guide lower level perceptual processes. In speech, a common paradigm is to construct continua ranging between two phonetic endpoints and to determine how higher level lexical context influences the perceived boundary. We applied this approach to music, presenting participants with major/minor triad continua after brief musical contexts. Two experiments yielded results that differed from classic results in speech perception. In speech, context generally expands the category of the (...) expected stimuli. We found the opposite in music: The major/minor boundary shifted toward the expected category, contracting it. Together, these experiments support the hypothesis that musical expectancy can feed back to affect lower‐level perceptual processes. However, it may do so in a way that differs fundamentally from what has been seen in other domains. (shrink)

To acquire one’s native phonological system, language-specific phonological categories and relationships must be extracted from the input. The acquisition of the categories and relationships has each in its own right been the focus of intense research. However, it is remarkable that research on the acquisition of categories and the relations between them has proceeded, for the most part, independently of one another. We argue that this has led to the implicit view that phonological acquisition is a “two-stage” process: Phonetic (...) categories are first acquired and then subsequently mapped onto abstract phoneme categories. We present simulations that suggest two problems with this view: First, the learner might mistake the phoneme-level categories for phonetic-level categories and thus be unable to learn the relationships between phonetic-level categories; on the other hand, the learner might construct inaccurate phonetic-level representations that prevent it from finding regular relations among them. We suggest an alternative conception of the phonological acquisition problem that sidesteps this apparent inevitability and acquires phonemic categories in a single stage. Using acoustic data from Inuktitut, we show that this model reliably converges on a set of phoneme-level categories and phonetic-level relations among subcategories, without making use of a lexicon. (shrink)

Speech categories are defined by multiple acoustic dimensions and their boundaries are generally fuzzy and ambiguous in part because listeners often give differential weighting to these cue dimensions during phonetic categorization. This study explored how a listener's perception of a speaker's socio-indexical and personality characteristics influences the listener's perceptual cue weighting. In a matched-guise study, three groups of listeners classified a series of gender-neutral /b/-/p/ continua that vary in VOT and F0 at the onset of the following vowel. (...) Listeners were assigned to one of three prompt conditions and rated the talker in terms of vocal gender prototypicality, attractiveness, friendliness, confidence, trustworthiness, and gayness. Male listeners and listeners who saw a male face showed less reliance on VOT compared to listeners in the other conditions. Listeners' visual evaluation of the talker also affected their weighting of VOT and onset F0 cues, although the effects of facial impressions differ depending on the gender of the listener. The results demonstrate that individual differences in perceptual cue weighting are modulated by the listener's gender and his/her subjective evaluation of the talker. These findings lend support for exemplar-based models of speech perception and production where socio-indexical features are encoded as a part of the episodic traces in the listeners' mental lexicon. This study also shed light on the relationship between individual variation in cue weighting and community-level sound change by demonstrating that VOT and onset F0 co-variation in North American English has acquired a certain degree of socio-indexical significance. (shrink)

This article briefly reviews categorization models in both cognitive psychology and cognitive phonology in order to set the background for a psycholinguistically plausible account of the classification of the allophones involved in category overlaps (i.e., the overlapping areas between phoneme categories) and in the so-called positions of neutralization. In addition, the traditional proposals of both Bloomfieldian phonemics (i.e., phonetic similarity) and the Prague School (i.e., archiphonemes) are discussed and an alternative proposal is offered. The latter claims that phonological (...) theory should be informed by psycholinguistic evidence obtained by experimental methods. This line of research will progressively make cognitive phonology a functional phonological theory consistent with the way speakers classify the sounds of their language and will contribute to theoretical progress in phonological theory. (shrink)

There is an active debate within the field of phonology concerning the cognitive status of substantive phonetic factors such as ease of articulation and perceptual distinctiveness. A new framework is proposed in which substance acts as a bias, or prior, on phonological learning. Two experiments tested this framework with a method in which participants are first provided highly impoverished evidence of a new phonological pattern, and then tested on how they extend this pattern to novel contexts and novel sounds. (...) Participants were found to generalize velar palatalization (e.g., the change from [k] as in keep to [t⌢∫S] as in cheap) in a way that accords with linguistic typology, and that is predicted by a cognitive bias in favor of changes that relate perceptually similar sounds. Velar palatalization was extended from the mid front vowel context (i.e., before [e] as in cape) to the high front vowel context (i.e., before [i] as in keep), but not vice versa. The key explanatory notion of perceptual similarity is quantified with a psychological model of categorization, and the substantively biased framework is formalized as a conditional random field. Implications of these results for the debate on substance, theories of phonological generalization, and the formalization of similarity are discussed. (shrink)

The present article offers the first systematic scholarly analysis of ConKisses, i.e., a sub-class of conative animal calls (i.e., directives addressed to animals) that draw on speech kisses (i.e., sounds that are made with a kiss-like articulatory mechanism). The author examines the pragma-semantics, phonetics, and morphology of ConKisses in 50 languages within a prototype-driven approach to categorization and concludes the following: ConKisses comply with the features associated with the prototype of a conative animal call and may therefore be regarded (...) as the prototype’s canonical instantiations – in fact, they constitute the most canonical subset within the entire conative-animal-call category and thus a highly extra-systematic one from sentence-grammar’s perspective. (shrink)

This dissertation work is premised upon the observation that semantic information is required in order to group phonetically distinct word-tokens into phonemically equivalent word-types. For philosophers, like W. V. Quine, who have a dim view of meaning, this claim regarding the semantic basis of natural language phonology, if true, is problematic. This is why in a series of publications, Quine has attempted to avoid any appeal to semantics in his efforts to reconstruct phonemic word-type equivalence. Consistent with his rejection of (...) meaning-based analytic equivalence, Quine rejects a meaning-based account of basic phonological equivalence. However, given the empirical failures to "reduce the phoneme" to acoustic, phonetic, and/or distributional data within phonology---combined with the philosophical short-comings of a behavioral reduction---a consistent disavowal of meaning prohibits Quine from acknowledging the legitimacy of basic phonological equivalence anymore than he wishes to acknowledge the legitimacy of analytic equivalence. In this way, a consistent Quinean rejection of meaning entails not only a skeptical dismissal of analytic equivalence, but also a dismissal of basic phonological equivalence. ;Yet the observation that semantic information is required in order to group word-tokens into phonemic word-types also has a Fregean application. This is because the semantic information required to reconstruct basic phonology is not entirely intensional in character. In addition to typing word-tokens of various predicates in terms of properties, word-tokens of names must also be phonologically typed. So whereas Quineans reject synonymous substitutions because they are based upon meaning, Fregeans claim reference is insufficient to guarantee the substitution of co-referring names salva veritate. But if basic phonological substitutions among word-tokens are premised upon co-reference , a consistent rejection of co-naming substitutions within belief contexts also threatens the substitution of allophonically related word-tokens in belief contexts. The semantic basis of natural language phonemic categorization has a number of implications vis-a-vis contemporary philosophy of language. (shrink)

Cognitive systems face a tension between stability and plasticity. The maintenance of long‐term representations that reflect the global regularities of the environment is often at odds with pressure to flexibly adjust to short‐term input regularities that may deviate from the norm. This tension is abundantly clear in speech communication when talkers with accents or dialects produce input that deviates from a listener's language community norms. Prior research demonstrates that when bottom‐up acoustic information or top‐down word knowledge is available to disambiguate (...) speech input, there is short‐term adaptive plasticity such that subsequent speech perception is shifted even in the absence of the disambiguating information. Although such effects are well‐documented, it is not yet known whether bottom‐up and top‐down resolution of ambiguity may operate through common processes, or how these information sources may interact in guiding the adaptive plasticity of speech perception. The present study investigates the joint contributions of bottom‐up information from the acoustic signal and top‐down information from lexical knowledge in the adaptive plasticity of speech categorization according to short‐term input regularities. The results implicate speech category activation, whether from top‐down or bottom‐up sources, in driving rapid adjustment of listeners' reliance on acoustic dimensions in speech categorization. Broadly, this pattern of perception is consistent with dynamic mapping of input to category representations that is flexibly tuned according to interactive processing accommodating both lexical knowledge and idiosyncrasies of the acoustic input. (shrink)

In Categorisation in Indian Philosophy: Thinking Inside the Box, Jessica Frazier has brought together an impressive array of scholars who have contributed nine essays, plus an introductory and concluding chapter, both written by her, which collectively provide a most fruitful perspective for examining classical South Asian traditions of thought. Creating categorial frameworks was certainly a prolific activity among the ancient and medieval authors of the darśanas, and indeed these authors drew heavily from pre-scholastic texts and language to build their systems. (...) Frazier in her concluding chapter gives a helpful synopsis of the various roles played by categories in Indian philosophies, classifying them as.. (shrink)

Despite the subjective experience of a continuous and coherent external world, we will argue that the perception and categorisation of visual space is constrained by the spatial resolution of the sensory systems but also and above all, by the pre-reflective representations of the body in action. Recent empirical data in cognitive neurosciences will be presented that suggest that multidimensional categorisation of perceptual space depends on body representations at both an experiential and a functional level. Results will also be resumed that (...) show that representations of the body in action are pre-reflective in nature as only some aspects of the pre-reflective states can be consciously experienced. Finally, a neuro-cognitive model based on the integration of afferent and efferent information will be described, which suggests that action simulation and associated predicted sensory consequences may represent the underlying principle that enables pre-reflective representations of the body for space categorisation and selection for action. (shrink)

During the course of this article, we examine the use of membership categorisation practices by a high-profile celebrity public social media account that has been understood to generate interest, attention and controversy across the UK media ecology. We utilise a data set of harvested tweets gathered from a high-profile public ‘celebrity antagonist’ in order to systematically identify types of antagonistic formulation that have generated different levels of interest within the social media community and beyond. Drawing from classic ethnomethodological studies of (...) banner headlines and other means of generating public interest and ‘making sense’, we respecify high-profile antagonistic tweets as category formulations that exhibit particular and regular membership category features that are reflexively bound to potential antagonistic readings, interest and controversy. In conclusion, we consider how such formulations may be understood to represent resources that constitute ignition points within antagonistic flows of communication and information that can be metaphorically understood as ‘digital wildfires’. (shrink)

Faut-il abandonner l'idée de catégorisation ou lui conserver une fonction plus restreinte, diversifiée, domaniale ? On se demande ce qui peut être préservé de la conception transcendantale pour prolonger son évolution récente au-delà de Wittgenstein, Goodman et Peirce. On propose une approche interrogative, présuppositionnelle et textologique qui lui conserve assez de fonctions , pour qu'il reste significatif de parler de catégorisation. Au lieu d'être immobiles, les catégories ont vocation à commander la recherche, qu'elle soit enquête scientifique ou même quête religieuse. (...) Un concept devient catégorial pour autant qu'il ouvre un domaine à la recherche, la guide ou lui permet de se réorganiser. A first question is raised, whether the idea of categorisation should be altogether dismissed or retained, but with more restricted, diversified and less extensive functions. The second question deals with what of the transcendantal dogma can be maintained in order to extend its recent developments beyond Wittgenstein, Goodman and Peirce. An interrogative, pre suppositional and textological approach is put forward, which could preserve enough functions to allow to go on speaking of categorisation with some kind of relevance. Far from being immovable, the categories indeed call for leadership in matters of research, be it scientific investigation or sacred religious quest. It appears that a concept becomes categorial in so far as it breaks fresh ground for research, provides guidance and enables it to perform self reorganisation. (shrink)

The aim of this paper is to investigate and describe the content in school rules by developing a category system of school rules, and thus making the logic behind different types of rules in school explicit. Data were derived from an ethnographic study conducted in two primary schools in Sweden. In order to analyse the data, grounded theory methodology was adapted. The analysis resulted in a category system of school rules, containing the following main categories: (a) relational rules, (b) structuring (...) rules, (c), protecting rules, (d), personal rules and (e) etiquette rules. In the light of this categorisation, more consciously pedagogical and professional work with rules can be conducted. The category system can counteract vagueness and unreasonableness, as well as highlighting the content, logic and functions of different school rules. (shrink)

Intuitive-automatic processes are crucial for making judgements and decisions. The fascinating complexity of these processes has attracted many decision researchers, prompting them to start investigating intuition empirically and to develop numerous models. Dual-process models assume a clear distinction between intuitive and deliberate processes but provide no further differentiation within both categories. We go beyond these models and argue that intuition is not a homogeneous concept, but a label used for different cognitive mechanisms. We suggest that these mechanisms have to be (...) distinguished to allow for fruitful investigations of intuition. Specifically, we argue that researchers should concentrate on investigating the processes underlying intuition before making strong claims about its performance. We summarise current models for intuition and propose a categorisation according to the underlying cognitive processes: (a) associative intuition based on simple learning-retrieval processes, (b) matching intuition based on comparisons with prototypes/exemplars, (c) accumulative intuition based on automatic evidence accumulation, and (d) constructive intuition based on construction of mental representations. We discuss how this differentiation might help to clarify the relationship between affect and intuition and we derive a very general hypothesis as to when intuition will lead to good decisions and when it will go astray. (shrink)

Affective congruency effects in the evaluation task can be explained by either spreading of activation or response competition. Eliminating effects of response compatibility by using other tasks (semantic categorisation, naming task) typically also eliminates affective congruency effects. However, there is no need for processing the affective information of the stimuli in these tasks either, which could be necessary for an affectively mediated spreading of activation (Spruyt et al., 2007, 2009, 2012). We introduced a new task to further test this hypothesis. (...) The valent/neutral-categorisation task does not confound affective congruency with response compatibility, but still requires a processing of the stimuli's valence. No affective congruency effect was obtained with this task in two experiments, disfavouring a conditional spreading activation account. On the other hand, a significant priming effect was found for associated word pairs in Experiment 1, providing evidence for the sensitivity of the task to detect spreading activation processes. (shrink)

Spruyt obtained an affective congruency effect in a valent/neutral categorisation task, which contrasts with the absence of such an effect in the same task that was reported by Werner and Rothermund. The crucial difference between the two studies is that Spruyt presented only valent primes, whereas Werner and Rothermund presented equal amounts of valent and neutral primes and targets in their experiments. Removing the neutral primes introduces a confound of affective matches with the required response. Affective congruency effects in Spruyt's (...) study can be explained straightforwardly in terms of such an affective matching strategy. To demonstrate the influence of matching strategies in the valent/neutral task without neutral primes, we conducted an experiment in which we induced an affective mismatching strategy. In support of our reasoning, this study revealed an affective incongruency effect in the valent/neutral categorisation task. We conclude that affective congruency as well as incongruency effects in the valent/neutral categorisation task reflect post-lexical affective (mis-)matching strategies rather than encoding facilitation. (shrink)

Although recent work has emphasised the importance of naïve theories to categorisation, there has been little work examining the grain of analysis at which causal information normally influences categorisation. That level of analysis may often go unappreciated because of an “illusion of explanatory depth”, in which people think they mentally represent causal explanatory relations in far more detail than they really do. Naïve theories therefore might seem to be irrelevant to categorisation, or perhaps they only involve noting the presence of (...) unknown essences. I argue instead that adults and children alike effectively track high-level causal patterns, often outside awareness, and that this ability is essential to categorisation. Three examples of such pattern-tracking are described. The shallowness of our explanatory understandings may be further supported by a reliance on the division of cognitive labour that occurs in all cultures, a reliance that arises from well-developed abilities to cluster knowledge in the minds of others. (shrink)

Vagueness is understood as the problem of associating imprecise application criteria with ordinary predicates such as ‘bald’ or ‘blue’. It is often construed as due to one’s tolerance to a minute difference in forming a verdict on the application of a vague predicate. This paper reports an experiment conducted to test the effect of tolerance, using as paradigm categorisation tasks performed with respect to transitional series, e.g., a series of tomatoes from red to orange. The findings suggest a negative effect (...) of tolerance on categorisation with vague predicates. The implication of the findings for certain commonly-held assumptions about tolerance is discussed. (shrink)

Two agents endowed with different categorisations engage in bargaining to reach an understanding and agree on a common categorisation. We model the process as a simple non-cooperative game and demonstrate three results. When the initial disagreement is focused, the bargaining process has a zero-sum structure. When the disagreement is widespread, the zero-sum structure disappears and the unique equilibrium requires a retraction of consensus: two agents who individually associate a region with the same category end up rebranding it under a different (...) category. Finally, we show that this last equilibrium outcome is Pareto dominated by a cooperative solution that avoids retraction; that is, the unique equilibrium agreement may be inefficient. (shrink)

We re-evaluate existing data that demonstrate a large amount of variability in the content of categories considering the fact that these data have been obtained in a specific task: the production of features of single isolated categories. We present new data that reveal a large consensus when participants have to judge whether or not a given feature is characteristic of a category and we show that classification tasks produce an intermediate level of consensus. We argue that the differences observed between (...) tasks are due to the extent of implied context and we propose a reinterpretation of typicality effects, demonstrating that they are compatible with the existence of a stable conceptual core. In order to explain how the existence of a conceptual core is consistent with variability due to context, we present a theory of categorisation based on a property tree organisation. Within a domain of description, we distinguish between semantic implications (flying → moving) and empirical implications (flying → having wings) as well as between properties used to describe objects. Semantic implications serve to build property lines and Galois lattices are used to reveal category structures according to empirical implications. We show that variability in the category content may be explained by the fact that some properties are emphasised while others are masked according to the context. (shrink)

We amplify possible complications to the tidy division between early vision and later categorisation which arise when we consider the perception of human faces. Although a primitive face-detecting system, used for social attention, may indeed be integral to “early vision,” the relationship between this and diverse other uses made of information from faces is far from clear.

Shedding light on the way in which Indian philosophical traditions crafted an elaborate picture of the world, this book brings Indian thinkers into dialogue with modern philosophy and global concerns. For those interested in philosophical traditions in general, this book will establish a foundation for further comparative perspectives on philosophy. For those concerned with the understanding of Indic culture, it will provide a platform for the continued renaissance of research into India's rich philosophical traditions.

Taking a detour to reach a goal is intelligent behavior based on making inferences. The main purpose of the present research is to show how such apparently complex behavior can emerge from basic mechanisms such as contextual categorisation and goal attribution when perceiving people. We presentacacia (Action by Contextually Automated Categorising Interactive Agents), a computer model implemented using StarLogo software, grounded in the principles of Artificial Life (Al), capable of simulating the behavior of a group of agents with a goal (...) (for instance, to find a treasure in a treasure hunt ) in an environment where obstacles mask the goal site. The results of the simulations show that agents reach the goal the fastest when they follow each other and take detours. We argue that these results indicate that intelligent adaptive behavior is based on the contextual categorisation of environmental constrainst (that is, obstacles and other agents). (shrink)

Critical (necessary or sufficient) features in categorisation have a long history, but the empirical evidence makes their existence questionable. Nevertheless, there are some cases that suggest critical feature effects. The purpose of the present work is to offer some insight into why classification decisions might misleadingly appear as if they involve critical features. Utilising Tversky's (1977) contrast model of similarity, we suggest that when an object has a sparser representation, changing any of its features is more likely to lead to (...) a change in identity than it would in objects that have richer representations. Experiment 1 provides a basic test of this suggestion with artificial stimuli, whereby objects with a rich or a sparse representation were transformed by changing one of their features. As expected, we observed more identity judgements in the former case. Experiment 2 further confirms our hypothesis, with realistic stimuli, by assuming that superordinate categories have sparser representations than subordinate ones. These results offer some insight into the way feature changes may or may not lead to identity changes in classification decisions. (shrink)

This paper investigated the effects, ramifications and limitations of categorising and labelling Directors and Boards when measuring or evaluating performance. According to Weiner (1982) labelling can have a profound impact on a person's life, leading to stigmas, reputation bias, prejudice or discrimination which can adversely impact Director and Board performance. Labelling Directors' behavioural traits can lead to the exaggeration of behaviours and lead fellow Directors or shareholders to have preconceived expectations about Directors. This study hypothesised that measurement of Directors and (...) Boards should be measured on a continuum and remain fluid. Fluid measurement takes into account all aspects of a Directors behaviour, circumstances and situational impacts, without categorisation or judgement. Results suggest Directors feel more confident in their ability to perform as Directors and evidence a greater state of preparedness and readiness for change. Findings are discussed in terms of the impacts for Directors, decision-making ability and Board performance. (shrink)

Technological shifts within the video game industry have enabled many games to evolve into platforms for repeated expenditure, rather than a one-time purchase product. Monetising a game as a service is challenging, and there is concern that some monetisation strategies may constitute unfair or exploitative practices which are not adequately covered by existing law. We asked 1104 players of video games to describe a time when they had been exposed to transactions which were perceived to be misleading, aggressive or unfair. (...) We found 35 separate techniques over eight domains: game dynamics designed to drive spending, product not meeting expectations, monetisation of basic quality of life, predatory advertising, in-game currency, pay to win, general presence of microtransactions and other. Notably, several of these reported practices seem to not align with existing UK consumer protection regulations. We discuss this potential misalignment, as well as the implications of identifying what players believe to be problematic monetisation techniques. (shrink)

Ethnomethodology research has systematically investigated discursive practices of categorisation, looking at the various ways by which social actors ascribe both themselves and others to identity categories to accomplish various kinds of social actions. Drawing on a data corpus of oncological visits collected in an Italian hospital, involving both native and non-native patients, the present work analyses how participants in these intercultural medical encounters invoke and make relevant social identity categories by the marking of collective pronouns in their talk. Our results (...) showed that whilst institutional identities prevailed, categorial formulations related to cultural or linguistic identities were rarely displayed in interactions with non-native patients. Conversational participants made very little of their linguistical or cultural background and when they did so, their cultural and linguistic identities were deployed for rhetorical and pragmatical aims, such as testing and negotiating common knowledge and epistemic authority. This study shows how even speakers’ minimal lexical choices, such as marked pronouns, impact the negotiation of meanings and activities in life-saving sites such as oncological visits. (shrink)