I am a data-driven psychological scientist with expertise in how different messaging affects cognition and behavior. I have 10+ years of experience in research, project management, survey design, measurement, data analytics and statistics, qualitative coding, quality control, data management, and science communication. Many research projects I lead and collaborate on employ quantitative and qualitative methods.



Ph.D., Developmental Psychology

University of California, Riverside


M.A., Psychology

University of California, Riverside


B.A.Psychology (Honors), Spanish

Northwestern College


Research Project Manager

Veris Insights

05/2022 -- Present

Psychology Research Scientist

Boston University

09/2020 -- 05/2022

Doctoral Student Researcher

University of California, Riverside

09/2014 -- 08/2020

Instructor & Teaching Assistant

University of California, Riverside

06/2015 -- 08/2019

Kirsten Lesage.jpg



In my academic research, I explored how the cultural context shapes how individuals reason and explain the world around them, and how beliefs and attitudes form and change or remain stable. I took a lifespan perspective in much of this work by examining how both children and adults think. 


I employed both quantitative and qualitative methods as well as a variety of research designs and techniques to answer research questions, including: longitudinal and cross-sectional designs, experimental and observational studies, focus groups, semi-structured qualitative interviews, surveys, and cognitive tasks.

Selected Publications

Lesage, K.A., & Richert, R.A. (2021). Can God do the impossible? Anthropomorphism  and children's certainty that God can make impossible things possible. Cognitive Development. (PDF)

Richert, R.A.,* Weisman, K., Lesage, K.A., Ghossainy, M.E., Reyes-Jaquez, B., & Corriveau, K.H.* (2022, In-Press). Belief, culture, & development: Insights from studying the development of religious beliefs and behaviors.  Advances in Child Development and Behavior. (PDF)

See a full list of publications here