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A New Method for Inducing a Depression-Like Behavior in Rats
Published on: February 22, 2018
Decreased approach motivation in depression
Catharina E Wang1, Tim Brennen, Arne Holte
1Department of Psychology, University of Tromsø, Tromsø, Norway. cwang@psyk.uit.no
Scandinavian Journal of Psychology
|November 17, 2006
Summary
Individuals with current or past depression show slower reaction times to positive words, unlike those never depressed. This suggests slower processing may be a vulnerability factor for depression.
Area of Science:
- Cognitive Psychology
- Clinical Psychology
- Psychopathology
Background:
- Emotional processing is critical in understanding depression.
- Dysfunctional attitudes and depressive symptoms influence cognitive processes.
- Reaction time and choice preference offer insights into emotional valence processing.
Purpose of the Study:
- To investigate the relationship between emotional word processing (choice preference, reaction time), depressive symptoms (Beck Depression Inventory - BDI), and dysfunctional attitudes (Dysfunctional Attitudes Scale - DAS).
- To compare these cognitive and symptomatic measures across three groups: clinically depressed (CD), previously depressed (PD), and never depressed (ND) individuals.
Main Methods:
- Participants (CD, PD, ND) completed tasks assessing choice preference and reaction time to emotionally valenced words.
- Self-report measures of depressive symptoms (BDI) and dysfunctional attitudes (DAS) were administered.
- Statistical analyses compared performance across groups and examined correlations between cognitive measures and symptom severity.
Main Results:
- Never depressed (ND) and previously depressed (PD) individuals showed a preference for positive words, differing from clinically depressed (CD) individuals.
- Clinically depressed (CD) and previously depressed (PD) individuals exhibited significantly longer reaction times compared to never depressed (ND) individuals.
- Higher scores on the Beck Depression Inventory (BDI) and Dysfunctional Attitudes Scale (DAS) were positively associated with longer reaction times to positive words, but not negative words.
Conclusions:
- Slower reaction times to positive stimuli in clinically depressed and previously depressed individuals may indicate a cognitive vulnerability factor for depression.
- This cognitive pattern might be linked to reduced approach motivation, contributing to the maintenance or recurrence of depressive states.
- Findings highlight the importance of cognitive processing in the understanding and potential treatment of depression.
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