There is no consensus on what makes a child gifted. Certainly it is a combination of a multitude of factors: The child's natural heredity sets an upper limit to his possibilities, but giftedness is not a package given at birth with no hopes of change. It is a growing, becoming process that constantly creates, elaborates and refines itself by selecting, comparing, and organizing life experiences (Strang, 1960).
Dunn, S. (1979). The Gifted Student in the Intermediate Grades: Developing Creativity Through Reading. Reading Horizons, 19 (4). Retrieved from http://scholarworks.wmich.edu/reading_horizons/vol19/iss4/4