Profile

B.S. California State University, Fresno 2019
M.S. Texas Tech University 2021
Ph.D Texas Tech University 2025

My research interests focus on the transition to parenthood for couples with a nonmarital pregnancy and how they navigate both their co-parenting relationship and their romantic relationship.

Courses Currently/Recently Taught 

• SPH-F 258 The Ties that Bind
• SPH-F 348 Early through Late Adulthood

Willis-Grossmann, E., Niehuis, S., Reifman, A., Fitzpatrick, J., & Weiser, D. (2025). Similarity of romantic partners' commitment trajectories and newlywed disillusionment: comparing premaritally pregnant couples and demographically matched nonpregnant controls. Personal Relationships 32(1), Article e70001. https://doi.org/10.1111/pere.70001

Prouty, A., Niehuis, S., Reifman, A., & Willis-Grossmann, E. (2024). Romantic disillusionment in college students as a function of family-of-origin dynamics: A path model with gender moderation. Journal of Couple & Relationship Therapy.

Niehuis, S., Davis, K., Reifman, A., Callaway, K., Luempert, A., Oldham, C. R., Head, J., & Willis-Grossmann, E. (2024). Psychometric evaluation of single-item relationship satisfaction, love, conflict, and commitment measures. Personality and Social Psychology Bulletin, 50 (3), 387-405. 

McKenzie, J., Castellón, R., Willis-Grossmann, E., Landeros, C., Rooney, J., & Stewart, C. (2023). Digital Divides, Generational Gaps, and Cultural Overlaps: A Portrait of Media Use and Perspectives of Media in Thailand. Media Psychology. 

Niehuis, S., Adamczyk, K., Trepanowski, R., Celejewska, A., Frydrysiak, A., Reifman, A., & Willis-Grossmann, E. (2021). Development of the Polish-language Relationship Disillusionment Scale and its validation. Personal Relationships, 28, 1017-1041. 

Reifman, A., Ursua-Benitez, M., Niehuis, S., Willis-Grossmann, E., & Thacker, M. (2020). #HappyAnniversary: Gender and age differences in spouses' and partners' Twitter greetings. Interpersona, 14, 54-68.

Mckenzie, J., Rooney, J., Stewart, C., Castellón, R., Landeros, C., & Willis, E. (2019). Brokering culture and power in a media-driven world: Parents of adolescents in Northern Thailand. Journal of Cross-Cultural Psychology, 50, 972–990.