This book presents a new 'triarchic' theory of human intelligence that goes beyond IQ in its conceptualization and implications for assessment. It will be of interest to all those concerned with intelligence, its development and measurement. The theory has three parts. The first deals with relations between intelligence and the internal world of the individual; the second, with relations between intelligence and the external world; the third part with relations between intelligence and experience. The author adduces evidence from studies of 'practical' intelligence as well as academic intelligence, and considers issues raised by exceptional intelligence and by intelligence testing.