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Time-on-task effect in trait anhedonia

Published online by Cambridge University Press:  16 April 2020

Stéphanie Dubal  and
Roland Jouvent
Stéphanie Dubal*
Affiliation:
Hôpital de la Salpêtrière, CNRS UMR 7593, 47, Bd de l’Hôpital, Pavillon Clérambault, 75013Paris, France
Roland Jouvent
Affiliation:
Hôpital de la Salpêtrière, CNRS UMR 7593, 47, Bd de l’Hôpital, Pavillon Clérambault, 75013Paris, France
*
*Corresponding author. E-mail address: [email protected] (S. Dubal).
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Abstract

The capacity to sustain attention was explored in a sample of anhedonic subjects according to the Chapman physical anhedonia scale. Sustained attention was determined by studying task-induced changes over the duration of the Eriksen response competition task [Percept. Psychophys. 16 (1974) 143]. Anhedonic subjects had longer reaction times (RTs), but missed no more targets than control subjects. Anhedonic subject RTs got longer with time-on-task (TOT) and displayed greater intra-subject variability. These results confirm those of a previous study indicating that anhedonic subjects may have developed a more conservative response strategy [Psychophysiology 37 (2000) 711] and suggest that this strategy may result in a more rapid decrease in energetical resources. Moreover, the greater intra-subject variability demonstrates the importance of assessing performance over time and its relationship to the variability of responses in the cognitive performance of anhedonic subjects.

Keywords

Affective neuroscienceAnhedoniaAttentionTime-on-taskPersonalityVariability
Type
Original article
Information
European Psychiatry , Volume 19 , Issue 5 , August 2004 , pp. 285 - 291
Copyright
Copyright © 2004 European Psychiatric Association

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