If a person's internalized and evolving life story (narrative identity) is to be considered an integral feature of personality itself, then aspects of that story should manifest some continuity over time while also providing evidence regarding important personality change. Accordingly, college freshmen and seniors provided detailed written accounts of 10 key scenes in their life stories, and they repeated the same procedure 3 months and then 3 years later. The accounts were content analyzed for reliable narrative indices employed in previous studies of life stories: emotional tone, motivational themes (agency, communion, personal growth), and narrative complexity. The results showed substantial continuity over time for narrative complexity and positive (vs. negative) emotional tone and moderate but still significant continuity for themes of agency and growth. In addition, emerging adults (1) constructed more emotionally positive stories and showed (2) greater levels of emotional nuance and self-differentiation and (3) greater understanding of their own personal development in the 4th year of the study compared to the 1st year. The study is the first to demonstrate both temporal continuity and developmentalThe authors would like to thank Michelle Green, Emily Kissel, Gina Logan, Ruth McAdams, and Allen Swanson for their assistance in data collection, coding, and analysis. The authors would also like to thank Jonathan Adler, Emily Durbin, and three anonymous reviewers for their comments on an earlier version of this manuscript. The research described herein was supported by a grant to the first author to establish the Foley Center for the Study of Lives at Northwestern University. Address correspondence to: Dan P. McAdams, Foley Center for the Study of Lives, Northwestern University, 2120 Campus Drive, Evanston, IL 60208. E-mail: dmca@ northwestern.edu. Narrative approaches to personality suggest that people create meaning and purpose in their lives through the construction of life stories (Hermans, 1996;McAdams, 1985McAdams, , 1999Singer, 2004;Thorne, 2000;Tomkins, 1987). People explain who they are, how they came to be, and where they believe their lives may be going by formulating, telling, and revising stories about the personal past and the imagined future (Bruner, 1990). A person's life story is an internalized and evolving narrative of the self that selectively reconstructs the past and anticipates the future in such a way as to provide a life with an overall sense of coherence and purpose. Like dispositional traits, it has been argued, individual differences in the structure and content of life stories represent significant and measurable aspects of personality itself (Hooker & McAdams, 2003;McAdams, 1995). In that traits sketch out broad consistencies in behavior and experience, trait assessments ultimately yield a dispositional profile of psychological individuality (e.g., Costa & McCrae, 1994). By contrast, life stories speak to how a person integrates his or her life in time and social context...