Reaction time analysis of two types of motor preparation for speech articulation: action as a sequence of chunks.
Reaction time (RT) prior to speech articulation increased as a function of response complexity. The RT findings formed 2 patterns, each of which was a different Response Complexity x Paradigm (choice RT vs. simple RT) interaction. That result extends previous findings from manual button-pressing tasks (S. T. Klapp, 1995) to a different action modality. Two different types of response programming, INT and SEQ, are assumed in the interpretation. Whereas INT can be identified with response programming within a word, SEQ fits a different interpretation related to timing of onsets of speech units. A critical assumption is that a long response is represented as a sequence of chunks; that organization is subject to manipulation. New findings suggest some modifications of the previous theory.
Klapp
Stuart T
ST
Department of Psychology, California State University, Hayward, CA 94542, USA. SKLAPP@CSUHAYWARD.EDU
D006801:Humans; D011214:Practice, Psychological; D011597:Psychomotor Performance / Q000502:physiology*; D011897:Random Allocation; D011930:Reaction Time / Q000502:physiology*; D013060:Speech / Q000502:physiology*; D013068:Speech Production Measurement