Projects

Big Questions we are grappling with recently

• How best can we measure what is unique to you i.e., idiographic personality? One way we are looking at this is by validating a Gaussian Process IRT model for intensive longitudinal data. Ask Muchen for more details.

Chen, Y., Xi, M., Jackson, J. J., Montgomery, J., & Garnett, R., (2024). Idiographic Personality Gaussian Process for Psychological Measurement. NeurIPS

• How variable is cognition in everyday life? Fluctuations in cognition are linked to numerous outcomes above and beyond average levels of cognition. We are investigating why these fluctuations occur.

Aschenbrenner, A. J., & Jackson, J. J. (in press). A diffusion model account of cognitive variability in healthy aging and very mild Alzheimer disease. Experimental Aging Research

• Does personality change in response to different situations? We have a number of studies examining how situations influence or constrain the expression of personality.

Xi, M., & Jackson, J. J (in press). Behavioral Variability as a Function of People, Situation, and Their Interaction. Journal of Personality and Social Psychology https://doi.org/10.31234/osf.io/v4dfh

• How consistent are environments across the lifespan? We know that personality is consistent, but how consistent is our everyday surroundings?