Who is the psychoanalyst known for his stages of psychosocial development?

The psychoanalyst known for his stages of psychosocial development is Erik Erikson. He developed a comprehensive theory that outlines eight distinct stages through which a healthy developing individual passes from infancy to late adulthood. Each of these stages is characterized by a specific conflict that acts as a turning point in development. Successfully resolving these conflicts leads to the development of a healthy personality and the acquisition of basic virtues.

Erikson's theory extends beyond the earlier stages of development proposed by Freud, who primarily focused on psychosexual stages, instead emphasizing the social and cultural aspects that influence human growth. Erikson's frameworks such as trust vs. mistrust in infancy and integrity vs. despair in old age provide a broad perspective on how interpersonal relationships and societal factors contribute to overall psychological health throughout one’s lifespan. This model has been influential in understanding human behavior and development, making Erikson a key figure in developmental psychology.