Objective: This study aimed to examine the relationship between depression and two dimensions of hope (pathways thinking and agency thinking) in college students and explore the dynamics of the causal relationship between these variables. Methods: A longitudinal study was conducted and included 381 college students. Hope and depression were measured using Snyder's State Hope Scale and the Center for Epidemiological Survey Depression Scale respectively, four times within a year (at 4-month intervals), and cross-lagged regression analysis was per...