Self-Theories: Their Role in Motivation, Personality, and Development examines how beliefs about personal qualities influence motivation, behaviour and development. Dweck distinguishes between viewing intelligence and other traits as fixed and believing they can change. Drawing on research with children and young adults, she explores how these assumptions shape personal goals, effort and responses to success or failure.

The book contrasts the desire to demonstrate ability with the aim of developing knowledge and skills. It examines why setbacks may lead to withdrawal and helplessness in some individuals but encourage persistence in others. Dweck also considers how beliefs about ability affect confidence, self-esteem and emotional responses to difficulties.

Beyond academic achievement, the analysis extends to personality, social judgement, stereotyping and interpersonal relationships. Later chapters examine how children develop beliefs about themselves and others, including the influence of praise and criticism. The book presents these beliefs as important factors in psychological development and social behaviour.