Displaying 1 - 11 of 11
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Levelt, W. J. M. (1984). Geesteswetenschappelijke theorie als kompas voor de gangbare mening. In S. Dresden, & D. Van de Kaa (
Eds. ), Wetenschap ten goede en ten kwade (pp. 42-52). Amsterdam: North Holland. -
Levelt, W. J. M. (1984). Some perceptual limitations on talking about space. In A. J. Van Doorn, W. A. Van de Grind, & J. J. Koenderink (
Eds. ), Limits in perception (pp. 323-358). Utrecht: VNU Science Press. -
Levelt, W. J. M. (1984). Spontaneous self-repairs in speech: Processes and representations. In M. P. R. Van den Broecke, & A. Cohen (
Eds. ), Proceedings of the 10th International Congress of Phonetic Sciences (pp. 105-117). Dordrecht: Foris. -
Levelt, W. J. M. (1984). Sprache und Raum. Texten und Schreiben, 20, 18-21.
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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.
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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.
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Van de Geer, J. P., & Levelt, W. J. M. (1963). Detection of visual patterns disturbed by noise: An exploratory study. Quarterly Journal of Experimental Psychology, 15, 192-204. doi:10.1080/17470216308416324.
Abstract
An introductory study of the perception of stochastically specified events is reported. The initial problem was to determine whether the perceiver can split visual input data of this kind into random and determined components. The inability of subjects to do so with the stimulus material used (a filmlike sequence of dot patterns), led to the more general question of how subjects code this kind of visual material. To meet the difficulty of defining the subjects' responses, two experiments were designed. In both, patterns were presented as a rapid sequence of dots on a screen. The patterns were more or less disturbed by “noise,” i.e. the dots did not appear exactly at their proper places. In the first experiment the response was a rating on a semantic scale, in the second an identification from among a set of alternative patterns. The results of these experiments give some insight in the coding systems adopted by the subjects. First, noise appears to be detrimental to pattern recognition, especially to patterns with little spread. Second, this shows connections with the factors obtained from analysis of the semantic ratings, e.g. easily disturbed patterns show a large drop in the semantic regularity factor, when only a little noise is added.
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