Relations between narratives, especially the inclusion of internal state language within narratives, and well-being have been found in adults. However, research with adolescents has been sparse and the findings inconsistent. We examined gender differences in adolescents' personal autobiographical narratives as well as relations between internal state language and emotional well-being. Mirroring previous research with different age groups, we found that females narrate both positive and negative personal experiences in more emotional ways than do males. Also, adolescent females include more cognitive processing words indicative of self-reflection than do adolescent males. Adolescent males who told personal narratives richer in internal state language displayed higher levels of well-being, but there were no relations between internal state language in personal narratives and well-being for adolescent females. These results are interpreted in terms of gender differences in emotional processing and understanding. Directions for future research are discussed. (Contains 4 tables.)