This paper examines the structure of implicit theories of creativity in a sample of gifted adolescents and describes the development and use of the Creative Self Checklist and the Creative Individual Checklist, adjective checklists designed to assess endorsement of creativity-related personality and behavioral attributes. Findings indicate that the gifted rate aspects of risk-taking and inquisitiveness as primary facets of their own creativity while defining artistic abilities and energy and motivation as important parts of creativity in others. This study also assessed the role that these implicit theories play in the display of creative behaviors with regard to both performance on creativity tests and participation in creative hobbies. Findings indicate that while performance on creativity measures is predictive of creative hobby participation, greater self-endorsement of beliefs that are positively related to creativity also significantly predict creative behaviors. (Contains 6 tables and 2 figures.)