Jonathan Cook
Associate Professor,
Department of Psychology

Peter Ruberton
Post-Doctoral Scholar

Hyun Joon Park
Graduate Student

Jason Qian
Graduate Student

Samantha Stevens
Graduate Student

Kaytlynn Griswold
Affiliated Graduate Student

Danfei Hu
Affiliated Graduate Student

Lindsay Palmer
Affiliated Graduate Student

Join the Lab

If you are interested in joining the lab as a research assistant or as a postdoctoral researcher, visit the Get Involved page for further information.

News and Events


Congratulations and best wishes to Jackson Harper, our erstwhile lab manager, who will be leaving us to study information and library science as a graduate student at Indiana University at Bloomington! We are very thankful for all that he has done for the lab.

Congratulations to Hyun Joon for successfully defending his comprehensive exam!

Louisa’s research on how doctoral students’ experience of gender-based stereotype threat, negative affect, and belonging will be exhibited in a poster presentation at the APS Virtual Poster Showcase, online from June 1 to September 1, 2020.

Peter’s research on how affirmation and belonging interventions affect doctoral students’ feelings of belonging in graduate school will be exhibited in a poster presentation at the APS Virtual Poster Showcase, online from June 1 to September 1, 2020.

Former GISP Lab member, Elissa Liguori’s research on the role of mindfulness and student-adviser meetings in doctoral students’ stress levels will be exhibited in a poster presentation at the APS Virtual Poster Showcase, online from June 1 to September 1, 2020.

Congratulations to our graduating undergraduate research assistants: Wei Liu, Juliana Ruta, and Roxy Zhang! We wish you all the best of luck in your future careers!

Hyun Joon presented a poster on the effect of psychological interventions on Ph.D. students’ cortisol levels at #SPSP2020 in New Orleans, LA.

Jason presented a poster on the impact of affirmation interventions on undergraduate students’ daily stress at #SPSP2020 in New Orleans, LA.

Peter presented a poster on the effects of values-affirmation and belonging interventions on doctoral students’ sense of belonging at #SPSP2020 in New Orleans, LA.

Samantha presented a poster on the effects of an image-based smartphone intervention on doctoral students’ belonging uncertainty at the Intervention Science preconference at #SPSP2020 in New Orleans, LA.

Danfei presented a data blitz on the value of trust in student-advisor relationships at the Motivation Science preconference at #SPSP2020 in New Orleans, LA.

Jonathan and former GISP-lab member Mikey Pasek are authors on a new article in Nature Human Behavior that examines effects of intergroup contact on members of socially advantaged and disadvantaged groups in 69 countries.

Jonathan and former GISP-lab member, Lauren Spencer, co-authored an article in the International Journal of MS Care showing that chronic illness stigma decreases across the lifespan.

Jonathan is the guest editor of an issue of the International Journal of MS Care that examines the role of stigma in multiple sclerosis.

The GISP lab is excited to welcome Samantha Stevens, who joins us as a first-year Ph.D. student this fall!

Jonathan and former GISP lab member Mikey Pasek wrote a blog post for the SPSP Character & Context Blog, The Negative Spiral of Religious Intolerance.

Jason published an article in Journal of Bisexuality reviewing Ritch Savin-Williams’s book Mostly Straight: Sexual Fluidity Among Men.

Check out all the presentations by GISP lab members and affiliates at #SPSP2019 in Portland, OR!

Danfei presented a poster (with Hyun Joon, Peter, and Jonathan) on student-advisor relationships at the Motivation Science preconference at #SPSP2019 in Portland, OR.

Peter gave a competitively-awarded single-paper presentation on his research on hedonic spending variety and well-being at #SPSP2019 in Portland, OR.

Hyun Joon gave a talk about the association between cortisol and academic performance in the classroom setting at #SPSP2019.

Hyun Joon and Jonathan co-chaired a symposium, New Insights into the Association of Cortisol with Performance, at #SPSP2019.

Congratulations to Dr. Michael Pasek, who successfully defended his dissertation, “Identity Threat, Belonging, and the Buffering Effects of Values Affirmation: An Intensive Longitudinal Approach”!

Hyun Joon successfully defended his master’s thesis, “Investigating Cortisol in the Classroom: The Association Between Cortisol and Academic Performance.”!

Jonathan presented research conducted with Kate Turetsky on the effect of social psychological interventions on academic social networks at the annual SESP conference on Saturday October 6th in Seattle, WA.

Jonathan has been elected to be a member of the Society of Experimental Social Psychology!

Congratulations to Dr. Julia Dahl on her graduation and new position as a postdoctoral scholar at the U.S. Army Research Institute! The GISP lab wishes her the best of luck in her career moving forward.

Meg and Jonathan published an article in Social Science & Medicine showing that stigma prospectively predicts depression in people living with MS.

Jonathan was on the panel “Promoting Psychophysiological Resilience in the Face of Discrimination” at the conference of the American Psychosomatic Society.

Hyun Joon presented the poster Higher cortisol levels predict better academic performance for Black and Hispanic students at #SPSP2018.

Congratulations to Dr. Julia Dahl, who successfully defended her dissertation, “Women’s Under-Confidence and Men’s Over-Confidence in STEM”!

Michael and Jonathan discuss the psychological and societal consequences of the president’s anti-Muslim tweets in an article for The Conversation.

Michael and Jonathan explore how religion can be a consequential source of social identity threat in an article in Social Psychological and Personality Science.

Hyun Joon has received a Graduate Travel Award to attend the annual Society for Personality and Social Psychology Convention in Atlanta!

Michael and Jonathan are authors on an article in PSPB that makes recommendations on how to best measure religiosity across religious cultures.

Jonathan is an author on an article in PNAS, showing that affirmation interventions delivered in middle school can reduce racial achievement gaps years later in high school and college.

Michael, Gabrielle, and Jonathan explore the conflicting multilevel forces around concealment and disclosure decisions in a review article in Journal of Social Issues.

Our new article in Journal of Social Issues shows that for people living with chronic illness, identity concealment is a strategic choice that can affect health.

Jonathan and Diane Quinn edited an issue of Journal of Social IssuesIdentity Concealment: A Multilevel Perspective on Causes and Consequences.

Michael successfully defended his comprehensive exam! “Do Core Needs Explain Wise Interventions? An Integrated Theory for Social Psychological Intervention Science.”

Michael was selected to attend SISPP 2017 at the University of Southern California!

Michael gave a talk about religion-based social identity threat at the convention of the Society for Personality and Social Psychology in San Antonio, TX.

Jonathan presented on, The Science of Inclusion, as part of the Penn State 2D Cyrstal Consortium Materials Innovation Platform webinar series funded by NSF on November 29th.

Jonathan presented at the Social Psychology Brownbag meeting at the University of Pittsburgh on October 14th.

new article in Journal of Experimental Social Psychology, which includes the GISP lab, suggests that affirmations can improve academic performance for students low in belonging, regardless of their race/ethnicity.

Michael received a Research Seed Grant from the Society for the Psychology of Religion and Spirituality (APA Division 36)!

Jonathan gave a talk on social identity threat and health at the annual conference of the Society for Experimental Social Psychology in Santa Monica, CA.

Julia successfully defended her comprehensive exam! “Masculinity May Be an Important but Unstable Self-Concept that Men Psychologically Defend”

Michael received a Graduate Travel Award from the Society for Personality and Social Psychology!

Jonathan led a discussion on navigating social identity in the classroom at the summer conference of the Society for the Psychological Study of Social Issues in Minneapolis.

Michael presented findings from a national study of religious stigma at the Association for Psychological Science convention in Chicago!

Check out the four GISP LAB posters authored by undergraduate researchers at this year’s convention of the Association for Psychological Science in Chicago!

Jonthan spoke about, Lasting Impact of Brief Psychological Interventions: New Findings and Insights, at Rutgers University Newark’s Psychology Department Spring Colloquium series.

Gabrielle gave a talk on stereotyping gay men and lesbians as contagious at the convention of the Society for Personality and Social Psychology in San Diego, CA.

Michael spoke about the relations between Christian fundamentalism, perceived stigma, and outgroup attitudes at the Religion and Spirituality Preconference for the convention of the Society for Personality and Social Psychology in San Diego, CA.

Julia gave a talk on masculinity threat and ideological dominance over women at the Political Psychology Preconference for the convention of the Society for Personality and Social Psychology in San Diego, CA.

Our recently published paper in Psychological Science shows how psychological interventions that help reduce the effects of social identity threat can have ecological effects that benefit entire classrooms.

Jonathan is an author on a new publication showing that in the presence of psychological stress, a values-affirmation intervention can prevent endothelial damage (a precursor to cardiovascular disease).

recently published pilot study from the GISP lab suggests that many people living with MS anticipate stigma and this motivates disease concealment.

Meg received the 2015 Scott and Paul Pearsall Scholarship from The American Psychological Foundation to join the GISP Lab and study the relationship between stigma, depression, and disease progression in individuals with multiple sclerosis!

Michael succesfully defended his master’s thesis! “When Faith Hurts: Stigma, Social Identity Threat, and Religion.”

Check out Gabrielle’s paper in PSPR examining people’s perceptions of homosexuality and pro-gay ideology as pathogens!

Julia published a paper in Social Psychology on how threats to masculinity sequentially cause public discomfort, anger, and ideological dominance over women!

Jonathan spoke at the weekly meeting of the social psychology area at the University of Connecticut.

Michael received an honorable mention for the Association for Psychological Science’s Student Research Award!

Julia attended the Summer Institute in Social and Personality Psychology!

Jonathan gave a talk on the health benefits of affirmation interventions at the meeting of the Association for Psychological Science in New York, NY.

Julia chaired a symposium and gave a talk on masculinity and gender relations at the meeting of the Association for Psychological Science in New York, NY.

Julia gave a talk on masculinity threat and ideological dominance at the meeting of the Midwestern Psychological Association in Chicago, IL.

Jonathan gave a talk on the consequences of concealing a chronic illness at the meeting of the Society for Personality and Social Psychology in Long Beach, CA.

Julia published a paper on group-based biases in leadership decisions about whom to relinquish power!

Julia received a graduate student travel award from the Society for Personality and Social Psychology!

Jonathan and his collaborators were awarded a three-year NSF grant!

Michael gave a talk on school-based interventions at the annual meeting of the New England Psychological Association at Bates College.

Michael received a student research award from the Society for the Psychology of Religion and Spirituality, Division 36 of the American Psychological Association!

Jonathan presented at the Groups Preconference of the Society of Experimental Social Psychology annual conference in Columbus, OH.

Jonathan presented on identity concealment as part of an invited symposium on stigma and public health at the ICAP conference in Paris.

Jonathan gave a talk on “A Psychological Perspective on Structural Change” at the SPSSI conference in Portland, OR.

Julia was accepted to the 2014 SPSSI policy workshop in Portland, OR!

Jonathan led a symposium and gave a talk on psychological interventions to reduce social stigma at the APS convention in San Francisco, CA.

Michael received a 2014 NSF Graduate Research Fellowship!

Jonathan published a paper on interventions to reduce the impact of stigma on public health.

Jonathan mentioned in New York Magazine article on racial achievement gaps.

Jonathan led a symposium on identity concealment at the annual SPSP conference in Austin, TX.

Jonathan was an author on a paper finding that writing about belonging is an “active ingredient”? in the success of affirmation interventions.

Jonathan wrote an article on the future of print news for The European magazine.