Date of Award
Spring 2023
Degree Type
Restricted to Claremont Colleges Dissertation
Degree Name
Psychology, PhD
Program
School of Social Science, Politics, and Evaluation
Dissertation or Thesis Committee Member
Rebecca J. Reichard
Dissertation or Thesis Committee Member
Stephen W. Gilliland
Dissertation or Thesis Committee Member
Michelle C. Bligh
Terms of Use & License Information
Rights Information
© 2023 Jessica Brull Barrett Diaz
Keywords
Inclusion, Psychological safety, Social identity threat, Empirical test
Subject Categories
Organizational Behavior and Theory | Psychology
Abstract
Following the tidal wave of racial unrest in the summer of 2020, organizations doubled down on a broader commitment to diversity, equity, and inclusion. Central to such efforts is a focus on psychological safety. Although the original psychological safety theory makes little mention of identity, in two studies, I empirically tested a recently developed social identity theory of psychological safety. According to the theory, identity-contingent cues in an individual’s environment activate social identity threat, reducing psychological safety and inclusion through three intraindividual cognitive processes: stress-arousal, vigilance to threat-related cues, and increased self-monitoring or regulation. Prior to testing my hypotheses, I conducted a pilot study to validate adaptations of two scales (cultures of conformity and social identity threat) and establish their convergent and divergent validity. Proceeding to my primary studies, study one was a longitudinal study testing the relationship between social identity threat and psychological safety over four weeks. I collected data from 386 Prolific workers employed at least part-time for an organization with more than ten employees. Results modeled using random intercept cross-lag panel modeling found significant bi-directional causal relationships between social identity threat and psychological safety. However, exploratory analysis tested and confirmed this was only the case for BIPOC participants and not for participants who identified as white. Study two modeled the complete social identity theory of psychological safety amongst 486 full and part-time workers collected using convenience sampling. Findings supported the theory’s core propositions that identity-contingent cues in an individual’s environment trigger social identity threat, which relates to lower levels of psychological safety and inclusion. Exploratory analyses empirically demonstrated that these relationships were far stronger for BIPOC individuals compared to white participants. Study two results also supported the hypothesis that for BIPOC participants, BIPOC representation in leadership and inclusive leadership serve as promising ways to attenuate the negative effects of identity-contingent cues and resulting social identity threat, thereby safeguarding psychological safety and inclusion.
ISBN
9798379958169
Recommended Citation
Diaz, Jessica Brull Barrett. (2023). Under Threat: An Empirical Test of the Social Identity Theory of Psychological Safety. CGU Theses & Dissertations, 526. https://scholarship.claremont.edu/cgu_etd/526.
