Academic intrinsic motivation of intellectually gifted children and a comparison group was examined in the Fullerton Longitudinal Study. Children at ages 9 through 13 years were administered the Children's Academic Intrinsic Motivation Inventory which assesses intrinsic motivation for school learning in reading, math, social studies, science, and for school in general. Analyses showed that across the ages, relative to a peer comparison, gifted children had significantly higher academic intrinsic motivation across all subject areas and school in general. It is suggested that: Children who become intellectually gifted enjoy the process of learning to a greater extent; intrinsic motivation is important for potentiation of giftedness; Assessment of academic intrinsic motivation be included in selection of children for gifted programs.