The humanistic approach to psychology and the behavioral approach to psychology differ in that the behavioral approach states that humans are driven by mental processes, whereas the humanistic approach states that humans are driven by free will.
Explanation:
The humanistic approach to psychology highlights sympathy and stresses the good in human behavior. The behavioral approach to psychology accentuates scientific and objective methods of investigation.
The behavioral approach states that the humans are determined by mental processes. The humanistic approach depicts that the humans are motivated by free will.
Critical thinking, decision-making and reasoning is some of the higher-order mental processes. Free will is closely related to the concepts of guilt, sin and moral responsibility.