Functional anatomy of speech perception and speech production: psycholinguistic implications

This paper presents evidence for a new model of the functional anatomy of speech/language (Hickok & Poeppel, 2000) which has, at its core, three central claims: (1) Neural systems supporting the perception of sublexical aspects of speech are essentially bilaterally organized in posterior superior temporal lobe regions; (2) neural systems supporting the production of phonemic aspects of speech comprise a network of predominately left hemisphere systems which includes not only frontal regions, but also superior temporal lobe regions; and (3) the neural systems supporting speech perception and production partially overlap in left superior temporal lobe. This model, which postulates nonidentical but partially overlapping systems involved in the perception and production of speech, explains why psycho- and neurolinguistic evidence is mixed regarding the question of whether input and output phonological systems involve a common network or distinct networks.     

The role of inhibition in a spreading-activation model of language production. I. The psycholinguistic perspective

Spreading-activation models of language production are only workable to the extent that they manage to solve the heat death problem, i.e., the danger that too many nodes in the network are overactive at the same time. Therefore, a delicate balance between activational and deactivational forces has to be struck. Of the three prevailing dampening mechanisms of decay, self-inhibition and other-inhibition, the latter has been selected for closer scrutiny. The key proposal of this two-part article is that activation-based models of language production cannot afford to do without an inhibitory component, in particular lateral inhibition among nodes of the same level. Psycholinguistic evidence is reviewed in an attempt to insulate inhibitory from excitatory mechanisms. Although it is difficult in normal adult language use to distinguish between the effects of excessive activation and insufficient inhibition, some patterns from language acquisition and aphasia can be shown to follow from inhibitory rather than excitatory problems, thus demonstrating the reality of inhibition. In a system of activational and deactivational forces, other-inhibition is claimed to have the excitatory mechanism of syntax as its natural opponent. It is finally argued that other-inhibition offers an explanation for some puzzling findings from the experimental literature.     

Hypothetical speech: A developmental perspective

The definitional responses on standardized tests of 49 children, ages 3–15, give evidence of a transitional stage in defining which is called hypothetical. Definitions of this stage are indicated by hypothetical markers. Five hypothetical markers are described briefly and one,like, in greater detail. The relationship oflike to taxonomic conceptual structure and to synonymy is stressed. The roles oflike in language development, logical inference, and communication are discussed.     

The MRC psycholinguistic database

This paper describes a computerised database of psycholinguistic information. Semantic, syntactic, phonological and orthographic information about some or all of the 98,538 words in the database is accessible, by using a specially-written and very simple programming language. Word-association data are also included in the database. Some examples are given of the use of the database for selection of stimuli to be used in psycholinguistic experimentation or linguistic research.     

Some psycholinguistic aspects of person perception

Adjective-noun combinations in person perception are analyzed from an integration-theoretical view, with special reference to judgments of likableness, occupational proficiency, and social value. Different theoretical considerations are shown to apply to these three judgment dimensions, but all can be conceptualized in terms of the valuation and integration operations of integration theory. Experimental support for this conceptual analysis is given for likableness and occupational proficiency. Advantages of the integration-theoretical analysis over congruity formulations are pointed out.     

Having a voice and getting a hearing: An educational perspective on free speech in a plural society

This paper examines Ronald Dworkin's claim that the right to free speech does not include a right to circumstances that encourage citizens to speak nor a right to competent and sympathetic understanding on the part of listeners. Drawing on familiar arguments for the existence of other human rights, the paper challenges Dworkin's claim. Even if, however, the challenge fails and it is not possible to show that there is such a right, that is not the end of the story. It is argued that democratic societies should try to foster conditions in which citizens are encouraged to speak and are listened to sympathetically in the interests of the well-being and flourishing of the polity. The important role education has to play in this is explored.     

The mass/count distinction: evidence from on-line psycholinguistic performance.

Under the hypothesis that the mass/count distinction in English is marked by a monovalent lexical feature, this article investigates whether features, lexical or morphosyntactic, play a role in simple lexical decision. Research findings have yet to settle how many features are accessed during lexical decision and to what extent morphosyntactic features are computed out of context. We used two on-line lexical decision experiments (simple and morphosyntactic priming). Results show that the lexical feature "mass" is computed in both experiments. However, the morphosyntactic feature "plural" is subject to task-specific effects and surfaces only where operative.     

Temporal context in speech processing and attentional stream selection: a behavioral and neural perspective

The human capacity for processing speech is remarkable, especially given that information in speech unfolds over multiple time scales concurrently. Similarly notable is our ability to filter out of extraneous sounds and focus our attention on one conversation, epitomized by the ‘Cocktail Party’ effect. Yet, the neural mechanisms underlying on-line speech decoding and attentional stream selection are not well understood. We review findings from behavioral and neurophysiological investigations that underscore the importance of the temporal structure of speech for achieving these perceptual feats. We discuss the hypothesis that entrainment of ambient neuronal oscillations to speech’s temporal structure, across multiple time-scales, serves to facilitate its decoding and underlies the selection of an attended speech stream over other competing input. In this regard, speech decoding and attentional stream selection are examples of ‘Active Sensing’, emphasizing an interaction between proactive and predictive top-down modulation of neuronal dynamics and bottom-up sensory input.     

Word naming and psycholinguistic norms: Chinese

In this article, we present normative data for 2,423 Chinese single-character words. For each word, we report values for the following 15 variables: word frequency, cumulative frequency, homophone density, phonological frequency, age of learning, age of acquisition, number of word formations, number of meanings, number of components, number of strokes, familiarity, concreteness, imageability, regularity, and initial phoneme. To validate the norms, we collected word-naming latencies. Factor analysis and multiple regression analysis show that naming latencies of Chinese single-character words are predicted by frequency, semantics, visual features, and consistency, but not by phonology. These analyses show distinct patterns in word naming between Chinese and alphabetic languages and demonstrate the utility of normative data in the study of nonalphabetic orthographic processing.     

Disagreement about logic from a pluralist perspective

Philosophical Studies - Logical pluralism is commonly described as the view that there is more than one correct logic. It has been claimed that, in order for that view to be interesting, there has...     

Reductio ad absurdum from a dialogical perspective

It is well known that reductio ad absurdum arguments raise a number of interesting philosophical questions. What does it mean to assert something with the precise goal of then showing it to be false, i.e. because it leads to absurd conclusions? What kind of absurdity do we obtain? Moreover, in the mathematics education literature number of studies have shown that students find it difficult to truly comprehend the idea of reductio proofs, which indicates the cognitive complexity of these constructions. In this paper, I start by discussing four philosophical issues pertaining to reductio arguments. I then briefly present a dialogical conceptualization of deductive arguments, according to which such arguments (especially mathematical proofs) are best understood as a dialogue between two (fictitious) participants—Prover and Skeptic. Finally, I argue that many of the philosophical and cognitive difficulties surrounding reductio arguments are dispelled or at least further clarified once one adopts a dialogical perspective.     

The self-choice effect from a multiple-cue perspective

The self-choice effect refers to the fact that self-chosen items are remembered better than experimenter-assigned items (Takahashi, 1991). The present study investigated the hypothesis that (a) response choice involves relational processing as activation of both target and context items, and (b) such activated context items are effective as potential retrieval cues for recall of target items. In the experiment, participants chose (choice condition) or were assigned (force condition) a target to remember for each trial. Prior to free recall of the target items, context words, related new words, or unrelated words were presented in a recognition task as potential retrieval cues. The results of a subsequent free recall test indicated that the incidental cues were more effective in the choice condition than in the force condition. Also, recognition resulted in a greater rate of successfully recognized context words at the cost of increasing falsely recognized related new words in the choice condition in comparison with the force condition. These results indicated that response choice activates context items at encoding, which operate as potential retrieval cues for recall of target items. Such cuing mechanisms operative in the self-choice effect are consistent with the multiple-cue theory proposed by Soraci et al. (1994; see also Soraci et al., 1999) for generative processing.     

Understanding emerging adulthood from a goal-setting perspective

The chapter first introduces the concept of emerging adulthood as a period of life that is characterized by instabilities and fluctuations. Then, the role of goal setting and aspirations in individual development during this stage of life is discussed. Following this, seven chapters of the present special issue are introduced, and the ways in which goal processes affect individual trajectories and outcomes are discussed. The chapter concludes with a discussion of future perspectives in the field, such as the need to investigate the relationships between goals and goal adjustment, the need to carry out cross-cultural comparisons, as well as the need to develop intervention based on goal and aspiration framework.     

For a psycholinguistic model of handwriting production: testing the syllable-bigram controversy

This study examined the theoretical controversy on the impact of syllables and bigrams in handwriting production. French children and adults wrote words on a digitizer so that we could collect data on the local, online processing of handwriting production. The words differed in the position of the lowest frequency bigram. In one condition, it coincided with the word's syllable boundary. In the other condition, it was located before the syllable boundary. The results yielded higher movement durations at the position where the low-frequency bigram coincided with the syllable boundary compared to where the low-frequency bigram appeared before the syllable boundary. Syllable-oriented strategies failed with the presence of a very low-frequency bigram within the initial syllable. Further analysis showed that children in grades 3 and 4 privileged syllable-oriented programming strategies. The production times of children in grade 4 were also affected by syllable frequency and, to a lesser extent, bigram frequency. The adults writing durations were modulated by bigram frequency. Therefore, both bigrams and syllables regulate handwriting production although the influence of bigrams was stronger in adults than children. In the light of these results, we propose a psycholinguistic model of handwriting production.