Steffanie Guillermo

Steffanie Guillermo is an Associate Professor of Psychology at Pitzer College, where she has been a faculty member since 2017. She teaches core psychology courses including Social Psychology, Psychological Statistics, and specialized seminars on Stereotyping & Prejudice within the Psychology Field Group.

She earned her BA from Lehigh University and PhD from the University of Colorado, Boulder. Her research examines systemic inequities through multiple lenses of social psychology.

Dr. Guillermo's work centers on racial/ethnic stereotyping and discrimination, with specific focus on intergroup threat perceptions and healthcare disparities. Her studies investigate how racial biases manifest in medical settings—particularly adolescent pain treatment—and shape policy attitudes toward immigrants. She employs experimental methods to uncover both automatic and controlled cognitive processes underlying prejudice.

Her publication trajectory shows evolution from foundational attentional bias research toward applied studies on immigration policy and medical inequality. Recent work emphasizes the role of racial concordance in patient-provider interactions and threat-based support for punitive immigration policies.

Dr. Guillermo actively mentors undergraduate researchers, as evidenced by numerous student co-authorships marked with '+' and '++' indicators. She guides senior thesis projects and integrates research into her teaching of advanced methodology courses.