Question

who claimed that behavior is affected by reinforcement?
sigmund freud
william james
wilhelm wundt
b. f. skinner

Explanation:

B. F. Skinner is known for his work on operant conditioning, where behavior is influenced by reinforcement. Sigmund Freud focused on psychoanalysis, William James on functionalism, and Wilhelm Wundt on structuralism and founding the first psychology laboratory.

Answer:

D. B. F. Skinner