Response scale transfer for visual speed.

Full Abstract

By reversing the presentation order and frequency of stimuli between two series of trials, we studied how the category scale for visual speed is transferred across stimulus contexts. Participants judged five stimulus speeds, using three categories (slow, moderate, and fast). In Experiment 1, mainly frequent speeds (either low or high) occurred on the initial trials. This manipulation produced divergent preshift ratings for identical stimuli. Although subsequent reversal of stimulus context resulted in a reversal of scales, the adjustment was incomplete:
The postshift ratings did not match the comparable preshift ones. In Experiment 2, mainly infrequent speeds were presented initially. Now the preshift ratings coincided, but higher postshift ratings occurred with the frequent high-speed rather than with the frequent low-speed stimuli. We conclude that with transfer into a new context, the spontaneous adjustment of response scale is determined (1) by the preshift primacy and the postshift frequency effects and (2) by the preshift frequency effect extended to the postshift trials.

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Author information

Author/s: Sokolov, Alexander (A); Pavlova, Marina (M); Baird, John C (JC);

Affiliation: University of Tübingen, Germany. a.sokolov@tu-bs.de

Journal and publication information

Publication Type: Journal Article

Journal: Perception & psychophysics (Percept Psychophys), published in United States. (Language: eng)

Reference: 2002-May; vol 64 (issue 4) : pp 561-9

Dates: Created 2002/07/22; Completed 2003/02/10; Revised 2004/11/17;

PMID: 12132758, status: MEDLINE (last retrieval date: 11/6/2008)

Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.

Comments and Corrections

ErratumIn: Percept Psychophys. 2002 August; 64(6):1015..

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