How did Charles Darwin's ideas influence William James's view of the mind?

Charles Darwin’s evolutionary theory profoundly influenced William James by shifting the study of the mind toward a biological and functional perspective.12

James’s seminal work, The Principles of Psychology (1890), assimilated mental science into the biological disciplines, treating thinking and knowledge as instruments that help individuals adapt to their environment. Influenced by Darwin, James viewed the mind as an adaptive organ whose primary function is to help people establish satisfactory relations with their surroundings.12

This perspective led James to:
* Establish Functionalism: He moved psychology away from the study of mental structures toward an analysis of how the mind functions in the struggle to live.13
* Emphasize Instincts: James argued that many human behaviors reflect inherited predispositions, or instincts, which evolved as adaptive responses to specific stimuli.4
* Define Pragmatism: His view of thought as purposive and adaptive informed his pragmatic philosophy, where the value of an idea is determined by its practical utility in guiding action and solving problems.2

By framing mentality as the "pursuance of future ends," James integrated Darwinian principles into the core of psychological inquiry.2