Displaying 1 - 26 of 26
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Damian, M. F., Vigliocco, G., & Levelt, W. J. M. (2001). Effects of semantic context in the naming of pictures and words. Cognition, 81, B77-B86. doi:10.1016/S0010-0277(01)00135-4.
Abstract
Two experiments investigated whether lexical retrieval for speaking can be characterized as a competitive process by assessing the effects of semantic context on picture and word naming in German. In Experiment 1 we demonstrated that pictures are named slower in the context of same-category items than in the context of items from various semantic categories, replicating findings by Kroll and Stewart (Journal of Memory and Language, 33 (1994) 149). In Experiment 2 we used words instead of pictures. Participants either named the words in the context of same- or different-category items, or produced the words together with their corresponding determiner. While in the former condition words were named faster in the context of samecategory items than of different-category items, the opposite pattern was obtained for the latter condition. These findings confirm the claim that the interfering effect of semantic context reflects competition in the retrieval of lexical entries in speaking. -
Dobel, C. E., Meyer, A. S., & Levelt, W. J. M. (2001). Registrierung von Augenbewegungen bei Studien zur Sprachproduktion. In A. Zimmer (
Ed. ), Experimentelle Psychologie. Proceedings of 43. Tagung experimentell arbeitender Psychologen (pp. 116-122). Lengerich, Germany: Pabst Science Publishers. -
Levelt, W. J. M. (2001). The architecture of normal spoken language use. In G. Gupta (
Ed. ), Cognitive science: Issues and perspectives (pp. 457-473). New Delhi: Icon Publications. -
Levelt, W. J. M. (2001). De vlieger die (onverwacht) wel opgaat. Natuur & Techniek, 69(6), 60.
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Levelt, W. J. M. (2001). Defining dyslexia. Science, 292, 1300-1301.
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Levelt, W. J. M. (2001). Relations between speech production and speech perception: Some behavioral and neurological observations. In E. Dupoux (
Ed. ), Language, brain and cognitive development: Essays in honour of Jacques Mehler (pp. 241-256). Cambridge, MA: MIT Press. -
Levelt, W. J. M. (2001). Spoken word production: A theory of lexical access. Proceedings of the National Academy of Sciences, 98, 13464-13471. doi:10.1073/pnas.231459498.
Abstract
A core operation in speech production is the preparation of words from a semantic base. The theory of lexical access reviewed in this article covers a sequence of processing stages beginning with the speaker’s focusing on a target concept and ending with the initiation of articulation. The initial stages of preparation are concerned with lexical selection, which is zooming in on the appropriate lexical item in the mental lexicon. The following stages concern form encoding, i.e., retrieving a word’s morphemic phonological codes, syllabifying the word, and accessing the corresponding articulatory gestures. The theory is based on chronometric measurements of spoken word production, obtained, for instance, in picture-naming tasks. The theory is largely computationally implemented. It provides a handle on the analysis of multiword utterance production as well as a guide to the analysis and design of neuroimaging studies of spoken utterance production. -
Levelt, W. J. M. (2001). Woorden ophalen. Natuur en Techniek, 69(10), 74.
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Van der Meulen, F., Meyer, A. S., & Levelt, W. J. M. (2001). Eye movements during the production of nouns and pronouns. Memory & Cognition, 29(3), 512-521.
Abstract
Earlier research has established that speakers usually fixate the objects they name and that the viewing time for an object depends on the time necessary for object recognition and for the retrieval of its name. In three experiments, speakers produced pronouns and noun phrases to refer to new objects and to objects already known. Speakers looked less frequently and for shorter periods at the objects to be named when they had very recently seen or heard of these objects than when the objects were new. Looking rates were higher and viewing times longer in preparation of noun phrases than in preparation of pronouns. If it is assumed that there is a close relationship between eye gaze and visual attention, these results reveal (1) that speakers allocate less visual attention to given objects than to new ones and (2) that they allocate visual attention both less often and for shorter periods to objects they will refer to by a pronoun than to objects they will name in a full noun phrase. The experiments suggest that linguistic processing benefits, directly or indirectly, from allocation of visual attention to the referent object. -
Bock, K., & Levelt, W. J. M. (1994). Language production: Grammatical encoding. In M. A. Gernsbacher (
Ed. ), Handbook of Psycholinguistics (pp. 945-984). San Diego,: Academic Press. -
Bouman, M. A., & Levelt, W. J. M. (1994). Werner E. Reichardt: Levensbericht. In H. W. Pleket (
Ed. ), Levensberichten en herdenkingen 1993 (pp. 75-80). Amsterdam: Koninklijke Nederlandse Akademie van Wetenschappen. -
Jescheniak, J. D., & Levelt, W. J. M. (1994). Word frequency effects in speech production: Retrieval of syntactic information and of phonological form. Journal of Experimental Psychology: Learning, Memory, and Cognition, 20(4), 824-843.
Abstract
In 7 experiments the authors investigated the locus of word frequency effects in speech production. Experiment 1 demonstrated a frequency effect in picture naming that was robust over repetitions. Experiments 2, 3, and 7 excluded contributions from object identification and initiation of articulation. Experiments 4 and 5 investigated whether the effect arises in accessing the syntactic word (lemma) by using a grammatical gender decision task. Although a frequency effect was found, it dissipated under repeated access to word's gender. Experiment 6 tested whether the robust frequency effect arises in accessing the phonological form (lexeme) by having Ss translate words that produced homophones. Low-frequent homophones behaved like high-frequent controls, inheriting the accessing speed of their high-frequent homophone twins. Because homophones share the lexeme, not the lemma, this suggests a lexeme-level origin of the robust effect. -
Levelt, W. J. M. (1994). Psycholinguistics. In A. M. Colman (
Ed. ), Companion Encyclopedia of Psychology: Vol. 1 (pp. 319-337). London: Routledge.Abstract
Linguistic skills are primarily tuned to the proper conduct of conversation. The innate ability to converse has provided species with a capacity to share moods, attitudes, and information of almost any kind, to assemble knowledge and skills, to plan coordinated action, to educate its offspring, in short, to create and transmit culture. In conversation the interlocutors are involved in negotiating meaning. Speaking is most complex cognitive-motor skill. It involves the conception of an intention, the selection of information whose expression will make that intention recognizable, the selection of appropriate words, the construction of a syntactic framework, the retrieval of the words’ sound forms, and the computation of an articulatory plan for each word and for the utterance as a whole. The question where communicative intentions come from is a psychodynamic question rather than a psycholinguistic one. Speaking is a form of social action, and it is in the context of action that intentions, goals, and subgoals develop. -
Levelt, W. J. M., & Wheeldon, L. (1994). Do speakers have access to a mental syllabary? Cognition, 50, 239-269. doi:10.1016/0010-0277(94)90030-2.
Abstract
The first, theoretical part of this paper sketches a framework for phonological encoding in which the speaker successively generates phonological syllables in connected speech. The final stage of this process, phonetic encoding, consists of accessing articulatory gestural scores for each of these syllables in a "mental syllabary". The second, experimental part studies various predictions derived from this theory. The main finding is a syllable frequency effect: words ending in a high-frequent syllable are named faster than words ending in a low-frequent syllable. As predicted, this syllable frequency effect is independent of and additive to the effect of word frequency on naming latency. The effect, moreover, is not due to the complexity of the word-final syllable. In the General Discussion, the syllabary model is further elaborated with respect to phonological underspecification and activation spreading. Alternative accounts of the empirical findings in terms of core syllables and demisyllables are considered. -
Levelt, W. J. M. (1994). Hoofdstukken uit de psychologie. Nederlands tijdschrift voor de psychologie, 49, 1-14.
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Levelt, W. J. M. (1994). On the skill of speaking: How do we access words? In Proceedings ICSLP 94 (pp. 2253-2258). Yokohama: The Acoustical Society of Japan.
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Levelt, W. J. M. (1994). Onder woorden brengen: Beschouwingen over het spreekproces. In Haarlemse voordrachten: voordrachten gehouden in de Hollandsche Maatschappij der Wetenschappen te Haarlem. Haarlem: Hollandsche maatschappij der wetenschappen.
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Levelt, W. J. M. (1994). The skill of speaking. In P. Bertelson, P. Eelen, & G. d'Ydewalle (
Eds. ), International perspectives on psychological science: Vol. 1. Leading themes (pp. 89-103). Hove: Erlbaum. -
Levelt, W. J. M. (1994). What can a theory of normal speaking contribute to AAC? In ISAAC '94 Conference Book and Proceedings. Hoensbroek: IRV.
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Praamstra, P., Meyer, A. S., & Levelt, W. J. M. (1994). Neurophysiological manifestations of auditory phonological processing: Latency variation of a negative ERP component timelocked to phonological mismatch. Journal of Cognitive Neuroscience, 6(3), 204-219. doi:10.1162/jocn.1994.6.3.204.
Abstract
Two experiments examined phonological priming effects on reaction times, error rates, and event-related brain potential (ERP) measures in an auditory lexical decision task. In Experiment 1 related prime-target pairs rhymed, and in Experiment 2 they alliterated (i.e., shared the consonantal onset and vowel). Event-related potentials were recorded in a delayed response task. Reaction times and error rates were obtained both for the delayed and an immediate response task. The behavioral data of Experiment 1 provided evidence for phonological facilitation of word, but not of nonword decisions. The brain potentials were more negative to unrelated than to rhyming word-word pairs between 450 and 700 msec after target onset. This negative enhancement was not present for word-nonword pairs. Thus, the ERP results match the behavioral data. The behavioral data of Experiment 2 provided no evidence for phonological Facilitation. However, between 250 and 450 msec after target onset, i.e., considerably earlier than in Experiment 1, brain potentials were more negative for unrelated than for alliterating word and word-nonword pairs. It is argued that the ERP effects in the two experiments could be modulations of the same underlying component, possibly the N400. The difference in the timing of the effects is likely to be due to the fact that the shared segments in related stimulus pairs appeared in different word positions in the two experiments. -
Flores d'Arcais, G. B., & Levelt, W. J. M. (
Eds. ). (1970). Advances in psycholinguistics. Amsterdam: North-Holland.Abstract
Research papers, Bressanone conference on psycholinguistics, summer courses of the University of Padova, July 1969 -
Levelt, W. J. M. (1970). A scaling approach to the study of syntactic relations. In G. B. Flores d'Arcais, & W. J. M. Levelt (
Eds. ), Advances in psycholinguistics (pp. 109-121). Amsterdam: North Holland. -
Levelt, W. J. M., Zwanenburg, W., & Ouweneel, G. R. E. (1970). Ambiguous surface structure and phonetic form in French. Foundations of Language, 6(2), 260-273.
Abstract
In modern approaches to phonology a lack of clarity exists on the issue of whether phonetic facts are psychological or physical realities. The results from an experiment suggest that phonetic facts can be considered as psychological realities, but with the restriction that they can (but not necessarily always do) take acoustical shape. More specifically, the syntactic material consisted of ambiguous French sentences of the following sort: On a tourné ce film intéressant pour les étudiants. They were spoken (a) in disambiguating contexts, without the (four) readers noticing the ambiguities, and (b) without context, but with the instruction to make a conscious effort to disambiguate. By tape splicing, the contexts were removed from the context-embedded sentences. Twenty-eight native speakers of French listened to the sentences and judged whether one or the other meaning had been intended by the speaker. Subjects performed significantly above chance: 60% correct identifications for context-embedded sentences, 75% for context-free sentences. Pitch-amplitude analyses were made to determine the acoustical differences involved. -
Levelt, W. J. M. (1970). Hierarchical chunking in sentence processing. Perception & Psychophysics, 8(2), 99-103.
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Levelt, W. J. M. (1970). Hierarchical clustering algorithms in the psychology of grammar. In G. B. Flores d'Arcais, & W. J. M. Levelt (
Eds. ), Advances in psycholinguistics (pp. 101-108). Amsterdam: North Holland. -
Noordman, L. G. M., & Levelt, W. J. M. (1970). Noun categorization by noun-verb intersection for the Dutch language. Heymans Bulletins, HB-70-59EX.
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