Related Experiment Video
Updated: Jun 19, 2026
06:15
A Modified Trier Social Stress Test for Vulnerable Mexican American Adolescents
Published on: July 10, 2017
Social interaction, testosterone, and stress responsiveness during adolescence
Stephanie Lürzel1, Sylvia Kaiser, Norbert Sachser
1Department of Behavioural Biology, University of Münster, Badestrasse 13, 48149 Münster, Germany. s.luerzel@gmail.com
Physiology & Behavior
|October 20, 2009
Summary
Social interaction in adolescent male guinea pigs increases testosterone levels, leading to reduced stress hormone (cortisol) responses. This suggests social factors influence stress system development during adolescence.
Area of Science:
- Endocrinology
- Neuroscience
- Animal Behavior
Background:
- Adolescence involves significant endocrine, neural, and behavioral changes.
- Male guinea pigs in late adolescence exhibit stress hyporesponsiveness in colony settings.
- Social housing conditions may influence stress responses.
Purpose of the Study:
- To investigate the hypothesis that social interaction increases testosterone (T) and reduces cortisol (C) responsiveness in adolescent male guinea pigs.
- To compare the stress response of pair-housed, colony-housed, and socially stimulated guinea pigs.
Main Methods:
- Comparison of stress responses (cortisol) in male guinea pigs under different housing conditions: pair-housed, colony-housed, and pair-housed with social stimulation.
- Measurement of testosterone levels in relation to social housing and developmental stage.
Main Results:
- Social stimulation acutely increased testosterone (T) levels.
- Colony-housed males showed increased T concentrations from early to late adolescence.
- Cortisol (C) response to novelty was reduced in late adolescent colony-housed males compared to pair-housed males; socially stimulated males showed intermediate responses.
Conclusions:
- Socially induced increases in testosterone during adolescence may organize a reduction in the endocrine stress response.
- Social interactions play a role in modulating the development of the stress system during adolescence.
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