This database consists of 6,558 responses from 822 adolescents aged 13-18 to the Twenty Statements Test. Adolescents were asked to define themselves by completing 20 'I am' stems, responding to the question 'Who am I?'. Self-images generated (e.g. 'I am happy' , 'I am a footballer) are indexed by participant gender and age (in years). These data is organised in the same way as the adult database for self-images Rathbone (2015). Adolescence is the critical period for self-concept development. Known information about the self, defined as 'self-images' (e.g. 'I am bossy') are constructed and reflect personally important memories (autobiographical memories); these are predominately formed during adolescence. Thus, how an adolescent defines themselves has an enduring effect across the lifespan. This project examines how adolescent define themselves. It will investigate the most common self-images across this population, and examine developmental changes.

Data was collected using paper questionnaires.Self-images were collected via self-report from adolescents. When completing the Twenty Statements Test, participants were told verbally, not to think too much about their responses. They were told not worry about the order/importance of statements when completing the measure, as they were to write statements in the order they came to them. All adolescents completed the questionnaires as a class (approximately N=30) during timetabled tutorial or PSHE periods. Adolescents who didn't want to take part or for whom parental consent (if under 16 years) was not provided, were given an alternative activity.