AP PSYCHOLOGY

Detailed explanation-1: -William James (1890) William James’s The Principles of Psychology[1] is widely considered to be the most important text in the history of modern psychology. Twelve years in the writing, [2] The Principles was, and in many ways still is, a document unique in the history of human thought.

Detailed explanation-2: -Herbert Spencer is famous for his doctrine of social Darwinism, which asserted that the principles of evolution, including natural selection, apply to human societies, social classes, and individuals as well as to biological species developing over geologic time.

Detailed explanation-3: -stream of consciousness …the psychologist William James in The Principles of Psychology (1890). As the psychological novel developed in the 20th century, some writers attempted to capture the total flow of their characters’ consciousness, rather than limit themselves to rational thoughts.

Detailed explanation-4: -According to Spencer in First Principles, three principles regulate the universe, namely the Law of the Persistence of Force, the Law of the Instability of the Homogeneous and the Law of the Multiplicity of Effects.