Pim Levelt

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  • Greenfield, P. M., Slobin, D., Cole, M., Gardner, H., Sylva, K., Levelt, W. J. M., Lucariello, J., Kay, A., Amsterdam, A., & Shore, B. (2017). Remembering Jerome Bruner: A series of tributes to Jerome “Jerry” Bruner, who died in 2016 at the age of 100, reflects the seminal contributions that led him to be known as a co-founder of the cognitive revolution. Observer, 30(2). Retrieved from http://www.psychologicalscience.org/observer/remembering-jerome-bruner.

    Abstract

    Jerome Seymour “Jerry” Bruner was born on October 1, 1915, in New York City. He began his academic career as psychology professor at Harvard University; he ended it as University Professor Emeritus at New York University (NYU) Law School. What happened at both ends and in between is the subject of the richly variegated remembrances that follow. On June 5, 2016, Bruner died in his Greenwich Village loft at age 100. He leaves behind his beloved partner Eleanor Fox, who was also his distinguished colleague at NYU Law School; his son Whitley; his daughter Jenny; and three grandchildren.

    Bruner’s interdisciplinarity and internationalism are seen in the remarkable variety of disciplines and geographical locations represented in the following tributes. The reader will find developmental psychology, anthropology, computer science, psycholinguistics, cognitive psychology, cultural psychology, education, and law represented; geographically speaking, the writers are located in the United States, Canada, the United Kingdom, and the Netherlands. The memories that follow are arranged in roughly chronological order according to when the writers had their first contact with Jerry Bruner.
  • Friederici, A., & Levelt, W. J. M. (1990). Spatial reference in weightlessness: Perceptual factors and mental representations. Perception and Psychophysics, 47, 253-266.

    Abstract

    The role of gravity in spatial coordinate assignment and the mental representation of space were studiedin three experiments, varying different perceptual cues systematically: the retinal, the visual background, the vestibular, and proprioceptive information. Verbal descriptions of visually presented arrays were required under different head positions (straight/tilt) and under different gravitational conditions (gravity present/gravity absent). The results of two experiments conducted with 2 subjects who participated in a space flight revealed that subjects are able to adequately assign positions in space in the absence of gravitational information, and that they do this by using their head—retinal coordinates as primary references. This indicates that they cognitively adapted to the perceptually new situation.The findings from a third experiment conducted with a larger group of subjects under a condition in which the gravitational information was present but irrelevant to the task being solved (subjects were in a-horizontal 8upine-position) show that subjects, in general, are flexible in using cues other than gravitational ones as references when the latter cannot serve as a referential system. These findings, together with the observation that consistent spatial assignment is possible evenimmediately after first exposure to the perceptually totally novel situation of weightlessness, seem to suggest that the mental representation of space, onto which given perceptual information is mapped, is independent of a particular percept.
  • Levelt, W. J. M. (1990). De connectionistische mode. In P. Van Hoogstraten (Ed.), Belofte en werkelijkheid: Sociale wetenschappen en informatisering (pp. 39-68). Lisse: Swets & Zeitlinger.
  • Levelt, W. J. M. (1990). Are multilayer feedforward networks effectively turing machines? Psychological Research, 52, 153-157.
  • Levelt, W. J. M. (1990). On learnability, empirical foundations, and naturalness [Commentary on Hanson & Burr]. Behavioral and Brain Sciences, 13(3), 501. doi:10.1017/S0140525X00079887.
  • Levelt, W. J. M. (1990). Some studies of lexical access at the Max Planck Institute for Psycholinguistics. In F. Aarts, & T. Van Els (Eds.), Contemporary Dutch linguistics (pp. 131-139). Washington: Georgetown University Press.
  • Schriefers, H., Meyer, A. S., & Levelt, W. J. M. (1990). Exploring the time course of lexical access in language production: Picture-word interference studies. Journal of Memory and Language, 29(1), 86-102. doi:10.1016/0749-596X(90)90011-N.

    Abstract

    According to certain theories of language production, lexical access to a content word consists of two independent and serially ordered stages. In the first, semantically driven stage, so-called lemmas are retrieved, i.e., lexical items that are specified with respect to syntactic and semantic properties, but not with respect to phonological characteristics. In the second stage, the corresponding wordforms, the so-called lexemes, are retrieved. This implies that the access to a content word involves an early stage of exclusively semantic activation and a later stage of exclusively phonological activation. This seriality assumption was tested experimentally, using a picture-word interference paradigm in which the interfering words were presented auditorily. The results show an interference effect of semantically related words on picture naming latencies at an early SOA (− 150 ms), and a facilitatory effect of phonologically related words at later SOAs (0 ms, + 150 ms). On the basis of these results it can be concluded that there is indeed a stage of lexical access to a content word where only its meaning is activated, followed by a stage where only its form is activated. These findings can be seen as empirical support for a two-stage model of lexical access, or, alternatively, as putting constraints on the parameters in a network model of lexical access, such as the model proposed by Dell and Reich.

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