As adolescents transition from the highly structured environments of secondary education into the college context where autonomous exploration is highly promoted, self-identity emerges as a pivotal developmental concern for establishing a coherent and consolidated sense of self. Grounded in Erikson’s (1968) conceptualization of the developmental crisis between identity and role confusion, the goals of this study were to investigate the growth trajectory and the factors that may predict the development of identity among college students in Taiwan. Statistical method of Latent Growth Curve Model and Cross-Lagged Panel Model were conducted to tap into the normative developmental trends and rank-order stability of college students’ identity. Furthermore, by partitioning time-invariant between-person differences and intra-personal change within the period of four semesters between freshman and junior years, we applied Random Intercept-Cross-Lagged Panel Model to examine Erikson’s theoretical propositions regarding the interplay between identity synthesis and confusion. Results suggested that the states of identity synthesis and confusion established before entering college and at the freshman year are important factors for identity formation.