Human temporal learning with mixed signals.

Autor: Subramaniam S; California State University, Stanislaus, Department of Psychology and Child Development, One University Circle, Turlock, CA 95382, USA; West Virginia University, Department of Psychology, West Virginia University, 1124 Life Sciences Building, P.O. Box 6040, Morgantown, WV 26506, USA. Electronic address: ssubramaniam@csustan.edu., Kyonka EGE; West Virginia University, Department of Psychology, West Virginia University, 1124 Life Sciences Building, P.O. Box 6040, Morgantown, WV 26506, USA; California State University, East Bay, Department of Psychology, 25800 Carlos Bee Blvd, Hayward, CA 94542, USA.
Jazyk: angličtina
Zdroj: Behavioural processes [Behav Processes] 2022 Feb; Vol. 195, pp. 104568. Date of Electronic Publication: 2021 Dec 21.
DOI: 10.1016/j.beproc.2021.104568
Abstrakt: The influence of cue informativeness on human temporal discrimination was evaluated using a peak-interval (PI) procedure. A target moved across the computer monitor, reaching the center at 2 or 4 s. Key presses shot the center of the screen. Participants earned points when shots hit the target and lost points for misses. The target was masked during occasional, extended PI trials, allowing for measurement of temporal discrimination. During PI trials, the screen background color could exert stimulus control by providing information about target speed. Cue informativeness was represented as the correlation (φ) between light or dark green backgrounds and the 2- or 4-s target and was manipulated across 4 conditions: a multiple schedule (φ = 1), mixed signals (φ = 0.8, 0.4), and a mixed schedule (φ = 0). In Experiment 1, participants were randomly assigned to one of the 4 conditions. In Experiment 2, each participant experienced all 4 conditions. Participants learned to respond at both intervals in all conditions. Cue informativeness did not affect peak time or spread. For the most part, temporal distributions of responses for the two background colors suggested a cover-both-bases strategy in the presence of mixed signals. Participants incorporated probabilistic information from cues to allocate responding in time.
(Copyright © 2021 The Authors. Published by Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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