Implicit learning of sequential bias in a guessing task: failure to demonstrate effects of dopamine administration and paranormal belief

Details

Serval ID
serval:BIB_10566E48BAF8
Type
Article: article from journal or magazin.
Collection
Publications
Title
Implicit learning of sequential bias in a guessing task: failure to demonstrate effects of dopamine administration and paranormal belief
Journal
Consciousness and Cognition
Author(s)
Palmer J., Mohr C., Krummenacher P., Brugger P.
Publication state
Published
Issued date
2007
Peer-reviewed
Oui
Volume
16
Number
2
Pages
498-506
Language
english
Notes
1053-8100 (Print)
1053-8100 (Linking)
Journal Article
Randomized Controlled Trial
Abstract
Previous research suggests that implicit sequence learning (ISL) is superior for believers in the paranormal and individuals with increased cerebral dopamine. Thirty-five healthy participants performed feedback-guided anticipations of four arrow directions. A 100-trial random sequence preceded two 100-trial biased sequences in which visual targets (arrows) on trial t tended to be displaced 90 degrees clockwise (CW) or counter-clockwise (CCW) from those on t - 1. ISL was defined as a positive change during the course of the biased run in the difference between pro-bias and counter-bias responses. It was hypothesized that this difference would be greater for believers in the paranormal than for skeptics, for those who received dopamine than for those who received placebo, and for believers who received dopamine than for the other groups. None of the hypotheses were supported by the data. It is suggested that a simple binary guessing task with a focus on prediction accuracy during early trials should be considered for future explorations.
Keywords
Adult Analysis of Variance *Attitude Dopamine/physiology Dopamine Agents/*pharmacology Double-Blind Method Humans Knowledge of Results (Psychology) Levodopa/*pharmacology Male *Parapsychology Serial Learning/*drug effects/physiology
Create date
17/01/2011 19:07
Last modification date
20/08/2019 12:37
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