Psychobiological effects of stress on intergroup bias

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

DRKS

Registry ID

DRKS00017614

Enrollment

Registered

2019-10-07

Start date

2016-11-22

Completion date

Unknown

Last updated

2025-04-07

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Effects of stress on social behavior Healthy men.

Interventions

Group 1: Experimental Group: stress induction through Trier Social Stress Test (Kirschbaum, C., Pirke, K. M. & Hellhammer, D. H. (1993)), applying to a fictional job and performing difficult math exce

Eligibility

Sex/Gender

Male

Age

18 Years to 35 Years

Inclusion criteria

Inclusion criteria: Young healthy male participants, aged between 18 and 35.

Exclusion criteria

Exclusion criteria: excessive alcohol intake; nicotine addiction; regular intake of drugs like cannabis; shift work; body mass index above 29.99; acute or previous psychotherapeutical treatment; physical disabilities; left-handed people; TSST experience

Design outcomes

Secondary

Measure	Time frame
TSST performance (0-100), self- and other-rating (passive judge, active judge, video rater; measured after the experiment). Questionnaires on subjective stress experiences, decision motives, social cognition (Interpersonal Reactivity Index), self-control (Self-Control Scale), empathy (Balanced Emotional Empathy Scale); measured at first appointment in the group laboratory without stress induction. Moderation of stress effects: more prosocial behavior in participants who perform well in the TSST?	—

Measure

Time frame

TSST performance (0-100), self- and other-rating (passive judge, active judge, video rater; measured after the experiment). Questionnaires on subjective stress experiences, decision motives, social cognition (Interpersonal Reactivity Index), self-control (Self-Control Scale), empathy (Balanced Emotional Empathy Scale); measured at first appointment in the group laboratory without stress induction. Moderation of stress effects: more prosocial behavior in participants who perform well in the TSST?

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Primary

Measure	Time frame
Social behavior (modulation of outcomes affecting others; measured by third-party modulation of other-affecting outcomes; 10 points per trial which can be used to in- or decrease the outcomes of others by up to 30 points), social cognition (detection of emotional face expression, happy, anger; modulated Emodetect by Zimmer & Domes, 2019) and neurophysiological correlates (ERPs after outcome presentation); psychophysiological parameters like heart rate, stress hormones (cortisol), subjective stress perception. Modulation by between-subjects factor "treatment" (stress vs. control) and within-subjects factor "group" (ingroup vs. outgroup), moderation by TSST (Trier Social Stress Test) performance, self-control, heart rate increase.	—

Measure

Time frame

Social behavior (modulation of outcomes affecting others; measured by third-party modulation of other-affecting outcomes; 10 points per trial which can be used to in- or decrease the outcomes of others by up to 30 points), social cognition (detection of emotional face expression, happy, anger; modulated Emodetect by Zimmer & Domes, 2019) and neurophysiological correlates (ERPs after outcome presentation); psychophysiological parameters like heart rate, stress hormones (cortisol), subjective stress perception. Modulation by between-subjects factor "treatment" (stress vs. control) and within-subjects factor "group" (ingroup vs. outgroup), moderation by TSST (Trier Social Stress Test) performance, self-control, heart rate increase.

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Countries

Germany

Contacts

Public ContactBastian Schiller

Albert-Ludwigs-Universität Freiburg, Institut für Psychologie, Biologische und Differentielle Psychologie

schiller@psychologie.uni-freiburg.de004976120397741

Outcome results

None listed

Source: DRKS (via WHO ICTRP) · Data processed: Feb 4, 2026