Research article summary (published 30 Jul 2001):

Higher order sequential effects in psychophysical judgments.

Full Abstract

We found that the depth of sequential effects depends on the judgment task. An experiment with squares indicated that stimulus-response pairs up to two trials back were included in the judgment process when subjects were required to make category judgments of size, whereas only the immediately preceding event was incorporated when subjects were making magnitude estimations. In the case of category judgment, interactions between the current stimulus and prior stimuli as well as configural effects indicated that events one and two trials back meet an equivalent function in the judgment process and that these events may jointly operate in one trial. These findings can be explained by a class of models that assume that the position of preceding stimuli relative to the current stimulus is decisive in the judgment process. The multiple-standards model is a representative of this class according to which there are two types of standards: (1) the endpoints of the range as long-term standards and (2) traces of preceding stimuli as short-term standards.

Author information

Author/s: Petzold, P (P); Haubensak, G (G);

Affiliation: Fachbereich Psychologie, Justus-Liebig-University of Giessen, Germany. petzold-jena(-atsign-)t-online.de

Journal and publication information

Publication Type: Journal Article; Research Support, Non-U.S. Gov't

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

Reference: 2001-Aug; vol 63 (issue 6) : pp 969-78

Dates: Created 2001/10/01; Completed 2002/01/07; Revised 2006/11/15;

PMID: 11578058, status: MEDLINE (last retrieved date: 2/18/2009)

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

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MeSH headings (categories)

This article was linked to the MeSH Headings (categories) shown below.

Adult Attention Discrimination Learning Female Humans Judgment Male

Memory, Short-Term Pattern Recognition, Visual Psychophysics Reaction Time Retention (Psychology) Serial Learning Size Perception

Note: Bold headings indicate primary MeSH headings or qualifiers.

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