Objective: To study the developmental trajectory of hope among late-adolescents, taking population heterogeneity and the impact of gender and family socioeconomic status (SES) into consideration. Methods: The study used the Snyder Hope Scale to perform four surveys of a sample of 381 Chinese late-adolescents, both male and female, with a mean age of 17.69 ± 1.12 years, over the course of one year, and employed a growth mixture model to perform data analysis. Results: Although the levels of hope among the respondents who had high and moderate l...