Is stress colorblind? Exploring endocrine stress responses in intergroup contexts using a virtual reality-based Trier Social Stress Test (TSST-VR)

Are social stress reactions dependent on the group identities of interaction partners? This study explored the role of ethnic context in modulating endocrine stress responses using a virtual reality (VR)-based adaptation of a standardized stress induction protocol, the Trier Social Stress Test (TSST-VR). Previous research found no clear link between endocrine stress response and ethnic context in the TSST, but conclusions remain limited due to the quasi-experimental nature of manipulating ethnic context in real-life face-to-face interactions. The VR adaptation of the TSST circumvents quasi-experimental limitations and thus provides a first, randomized-controlled investigation of the effects of ethnic context on endocrine stress responses. Forty-three men participated in the study, facing either an ingroup (White) or an outgroup (Arab) panel of interviewers. As expected, the TSST-VR produced physiological and subjective stress reactions. However, endocrine stress reactions occurred independent of interviewer ethnicity and could not be predicted based on implicit bias, explicit prejudice, or prejudice-related appearance concerns. Other physiological and subjective stress reactivity parameters also remained comparable across intergroup conditions. Implications for stress research are discussed.

Automated summary

This study used virtual reality technology to investigate the impact of ethnic background on stress reactions and found that endocrine stress reactions are independent of interviewer ethnicity and cannot be predicted based on implicit bias, explicit prejudice, or appearance concerns.