Pim Levelt

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Displaying 1 - 21 of 21
  • Baayen, H., Levelt, W. J. M., Schreuder, R., & Ernestus, M. (2007). Paradigmatic structure in speech production. Proceedings from the Annual Meeting of the Chicago Linguistic Society, 43(1), 1-29.

    Abstract

    The main goal of the present study is to trace the consequences of local and global markedness for the processing of singular and plural nouns. Decompositional models such as proposed by (Pinker (1997); Pinker (1999)) and (Levelt et al. (1999)) predict a lexeme frequency effect and no effects of the frequencies of the singular and the plural forms. Experiments 1 and 4 reveal the expected lexeme frequency effect. Furthermore, in these experiments there are no clear independent effects of the frequencies of the inflected forms. However, the effects of Entropy and Relative Entropy that emerge from these experiments show that in production knowledge of the probabilities of the individual inflected forms do play a role, albeit indirectly. These entropy effects bear witness to the importance of paradigmatic organization of inflected forms in the mental lexicon, both at the level of individual lexemes (Entropy) and at the general level of the class of nouns (Relative Entropy).
  • Korvorst, M., Roelofs, A., & Levelt, W. J. M. (2007). Telling time from analog and digital clocks: A multiple-route account. Experimental Psychology, 54(3), 187-191. doi:10.1027/1618-3169.54.3.187.

    Abstract

    Does the naming of clocks always require conceptual preparation? To examine this question, speakers were presented with analog and digital clocks that had to be named in Dutch using either a relative (e.g., “quarter to four”) or an absolute (e.g., “three forty-five”) clock time expression format. Naming latencies showed evidence of conceptual preparation when speakers produced relative time expressions to analog and digital clocks, but not when they used absolute time expressions. These findings indicate that conceptual mediation is not always mandatory for telling time, but instead depends on clock time expression format, supporting a multiple-route account of Dutch clock time naming.
  • Levelt, W. J. M. (2007). Levensbericht Detlev W. Ploog. In Levensberichten en herdenkingen 2007 (pp. 60-63). Amsterdam: Koninklijke Nederlandse Akademie van Wetenschappen.
  • Özdemir, R., Roelofs, A., & Levelt, W. J. M. (2007). Perceptual uniqueness point effects in monitoring internal speech. Cognition, 105(2), 457-465. doi:10.1016/j.cognition.2006.10.006.

    Abstract

    Disagreement exists about how speakers monitor their internal speech. Production-based accounts assume that self-monitoring mechanisms exist within the production system, whereas comprehension-based accounts assume that monitoring is achieved through the speech comprehension system. Comprehension-based accounts predict perception-specific effects, like the perceptual uniqueness-point effect, in the monitoring of internal speech. We ran an extensive experiment testing this prediction using internal phoneme monitoring and picture naming tasks. Our results show an effect of the perceptual uniqueness point of a word in internal phoneme monitoring in the absence of such an effect in picture naming. These results support comprehension-based accounts of the monitoring of internal speech.
  • Roelofs, A., Özdemir, R., & Levelt, W. J. M. (2007). Influences of spoken word planning on speech recognition. Journal of Experimental Psychology: Learning, Memory, and Cognition, 33(5), 900-913. doi:10.1037/0278-7393.33.5.900.

    Abstract

    In 4 chronometric experiments, influences of spoken word planning on speech recognition were examined. Participants were shown pictures while hearing a tone or a spoken word presented shortly after picture onset. When a spoken word was presented, participants indicated whether it contained a prespecified phoneme. When the tone was presented, they indicated whether the picture name contained the phoneme (Experiment 1) or they named the picture (Experiment 2). Phoneme monitoring latencies for the spoken words were shorter when the picture name contained the prespecified phoneme compared with when it did not. Priming of phoneme monitoring was also obtained when the phoneme was part of spoken nonwords (Experiment 3). However, no priming of phoneme monitoring was obtained when the pictures required no response in the experiment, regardless of monitoring latency (Experiment 4). These results provide evidence that an internal phonological pathway runs from spoken word planning to speech recognition and that active phonological encoding is a precondition for engaging the pathway. (PsycINFO Database Record (c) 2007 APA, all rights reserved)
  • Levelt, W. J. M. (1991). Die konnektionistische Mode. Sprache und Kognition, 10(2), 61-72.
  • Levelt, W. J. M. (1991). Lexical access in speech production: Stages versus cascading. In H. Peters, W. Hulstijn, & C. Starkweather (Eds.), Speech motor control and stuttering (pp. 3-10). Amsterdam: Excerpta Medica.
  • Levelt, W. J. M., Schriefers, H., Vorberg, D., Meyer, A. S., Pechmann, T., & Havinga, J. (1991). Normal and deviant lexical processing: Reply to Dell and O'Seaghdha. Psychological Review, 98(4), 615-618. doi:10.1037/0033-295X.98.4.615.

    Abstract

    In their comment, Dell and O'Seaghdha (1991) adduced any effect on phonological probes for semantic alternatives to the activation of these probes in the lexical network. We argue that that interpretation is false and, in addition, that the model still cannot account for our data. Furthermore, and different from Dell and O'seaghda, we adduce semantic rebound to the lemma level, where it is so substantial that it should have shown up in our data. Finally, we question the function of feedback in a lexical network (other than eliciting speech errors) and discuss Dell's (1988) notion of a unified production-comprehension system.
  • Levelt, W. J. M., Schriefer, H., Vorberg, D., Meyer, A. S., Pechmann, T., & Havinga, J. (1991). The time course of lexical access in speech production: A study of picture naming. Psychological Review, 98(1), 122-142. doi:10.1037/0033-295X.98.1.122.
  • Levelt, W. J. M. (1969). Semantic features: A psychological model and its mathematical analysis. In Heymans Bulletins Psychologische instituten R.U. Groningen, HB-69-45.
  • Levelt, W. J. M. (1969). R.N. Haber, Contemporary theory and research in visual perception [Book review]. Nederlands tijdschrift voor de psychologie, 24, 463-464.
  • Levelt, W. J. M. (1969). A re-analysis of some adjective/noun intersection data. Heymans Bulletins, HB-69-31EX.
  • Levelt, W. J. M. (1969). E.J. Brière, A psycholinguistic study of phonological interference [Book review]. Lingua, 22, 119-120.
  • Levelt, W. J. M., Zwanenburg, W., & Ouweneel, G. R. E. (1969). Ambiguous surface structure and phonetic form in French. Heymans Bulletins, (HB-69-28EX).
  • Levelt, W. J. M. (1969). Hierarchical chunking in sentence processing. Heymans Bulletins, HB-69-31EX.
  • Levelt, W. J. M. (1969). Psycholinguistiek. In Winkler-Prins [Suppl.] (pp. A756-A757).
  • Levelt, W. J. M. (1969). Psychological representations of syntactic structures. Heymans Bulletins, HB-69-36EX.
  • Levelt, W. J. M. (1969). R.M. Warren en R.P. Warren, Helmholtz on perception, its physiology and development [Book review]. Nederlands tijdschrift voor de psychologie, 24, 463-464.
  • Levelt, W. J. M., & Ouweneel, G. R. E. (1969). The perception of French sentences with a surface ambiguity. Nederlands Tijdschrift voor de Psychologie en haar Grensgebieden, 24, 245-248.
  • Levelt, W. J. M. (1969). The perception of syntactic structure. Heymans Bulletins, HB-69-30EX.
  • Levelt, W. J. M. (1969). The scaling of syntactic relatedness: A new method in psycholinguistic research. Psychonomic Science, 17(6), 351-352.

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