Life span developmental psychology proposes that the ability to create a coherent life narrative does not develop until early adolescence. Using a novel methodology, 10-, 12-, and 14-year-old participants were asked to tell their life stories aloud to a researcher. Later, participants separated their transcribed narratives into self-identified chapters. When life stories were assessed with measures of temporal and causal coherence, most participants in all age groups were able to tell a linear and coherent narrative. The 10-year-olds were more likely to start their narratives after birth and to use single event chapters in their stories, but they did not differ significantly from older participants in terms of the coherence or chronology of their chapters. This novel method for analyzing life narratives both supports and extends prior research on the development of life stories in adolescence.