This brought late 19th century scientists to conclude that psychology must build on introspection; thus introspectionism was born.
2.
In the United States, behaviorism arose in opposition to introspectionism and associated reaction-time research, and turned the focus of psychological research entirely to learning theory.
3.
Behaviorism dominated philosophy of mind for much of the 20th century, especially the first half . [ 10 ] In psychology, behaviorism developed as a reaction to the inadequacies of introspectionism . [ 35 ] Introspective reports on one's own interior mental life are not subject to careful examination for accuracy and can not be used to form predictive generalizations.