Pim Levelt

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Displaying 1 - 11 of 11
  • Levelt, W. J. M., Richardson, G., & La Heij, W. (1985). Pointing and voicing in deictic expressions. Journal of Memory and Language, 24, 133-164. doi:10.1016/0749-596X(85)90021-X.

    Abstract

    The present paper studies how, in deictic expressions, the temporal interdependency of speech and gesture is realized in the course of motor planning and execution. Two theoretical positions were compared. On the “interactive” view the temporal parameters of speech and gesture are claimed to be the result of feedback between the two systems throughout the phases of motor planning and execution. The alternative “ballistic” view, however, predicts that the two systems are independent during the phase of motor execution, the temporal parameters having been preestablished in the planning phase. In four experiments subjects were requested to indicate which of an array of referent lights was momentarily illuminated. This was done by pointing to the light and/or by using a deictic expression (this/that light). The temporal and spatial course of the pointing movement was automatically registered by means of a Selspot opto-electronic system. By analyzing the moments of gesture initiation and apex, and relating them to the moments of speech onset, it was possible to show that, for deictic expressions, the ballistic view is very nearly correct.
  • Levelt, W. J. M. (1976). Formal grammars and the natural language user: A review. In A. Marzollo (Ed.), Topics in artificial intelligence (pp. 226-290). Vienna: Springer.
  • Levelt, W. J. M., Schreuder, R., & Hoenkamp, E. (1976). Struktur und Gebrauch von Bewegungsverben. Zeitschrift für Literaturwissenschaft und Linguistik, 6(23/24), 131-152.
  • Levelt, W. J. M., & Kempen, G. (1976). Taal. In J. Michon, E. Eijkman, & L. De Klerk (Eds.), Handboek der Psychonomie (pp. 492-523). Deventer: Van Loghum Slaterus.
  • Stassen, H., & Levelt, W. J. M. (1976). Systemen, automaten en grammatica's. In J. Michon, E. Eijkman, & L. De Klerk (Eds.), Handboek der psychonomie (pp. 100-127). Deventer: Van Loghum Slaterus.
  • De Weert, C., & Levelt, W. J. M. (1976). Comparison of normal and dichoptic colour mixing. Vision Research, 16, 59-70. doi:10.1016/0042-6989(76)90077-8.

    Abstract

    Dichoptic mixtures of equiluminous components of different wavelengths were matched with a binocularly presented "monocular" mixture of appropriate chosen amounts of the same colour components. Stimuli were chosen from the region of 490-630 nm. Although satisfactory colour matches could be obtained, dichoptic mixtures differed from normal mixtures to a considerable extent. Midspectral stimuli tended to be more dominant in the dichoptic mixtures than either short or long wavelength stimuli. An attempt was made to describe the relation between monocular and dichoptic mixtures with one function containing a wavelength variable and an eye dominance parameter.
  • De Weert, C., & Levelt, W. J. M. (1976). Dichoptic brightness combinations for unequally coloured lights. Vision Research, 16, 1077-1086.
  • Levelt, W. J. M., & Flores d'Arcais, G. B. (1975). Some psychologists' reactions to the Symposium of Dynamic Aspects of Speech Perception. In A. Cohen, & S. Nooteboom (Eds.), Structure and process in speech perception (pp. 345-351). Berlin: Springer.
  • Levelt, W. J. M. (1975). Systems, skills and language learning. In A. Van Essen, & J. Menting (Eds.), The context of foreign language learning (pp. 83-99). Assen: Van Gorcum.
  • Levelt, W. J. M., & Kempen, G. (1975). Semantic and syntactic aspects of remembering sentences: A review of some recent continental research. In A. Kennedy, & W. Wilkes (Eds.), Studies in long term memory (pp. 201-216). New York: Wiley.
  • Levelt, W. J. M. (1975). What became of LAD? [Essay]. Lisse: Peter de Ridder Press.

    Abstract

    PdR Press publications in cognition ; 1

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