Delving into the detail: Greater episodic detail in narratives of a critical life event predicts an increase in adolescent depressive symptoms across one year

Depressed people have reduced ability to recall specific autobiographical memories, yet the role of reduced memory specificity in the development of adolescent depression is unclear. Two reasons are the limited longitudinal studies with this age group and the dominant use of just one measure of memory specificity, the Autobiographical Memory Test (AMT; Williams & Broadbent, 1986). In the current one-year longitudinal study, community adolescents (N = 132, M = 16.13 years at Time 1) wrote about a life turning point, and their narratives were coded with respect to the amount of episodic and semantic detail. Participants also completed an adapted version of the Minimal Instructions AMT. Greater episodic detail in young people's turning point narrative was positively associated with depressive symptoms separately at Times 1 and 2, and uniquely predicted increases in depressive symptoms across the year. A non-positive valence of the turning point resolution also positively predicted Time 2 depressive symptoms. In contrast, specificity as assessed by the AMT did not predict such an increase. The results suggest that episodic detail in highly self-relevant narratives may be a sensitive predictor of increases in adolescent depressive symptoms across time. We consider excessive self focus and retrieval style as potential explanations of our findings.