Final answer:
Carl Rogers helped move the field to an evolving 'behavioral humanism' by emphasizing the client's involvement in treatment.
Step-by-step explanation:
Carl Rogers helped move the field to an evolving 'behavioral humanism' by emphasizing that the client should be deeply involved in the choice and direction of treatment. His client-centered approach to therapy is still commonly used in psychotherapeutic settings today (O'hara, n.d.). Rogers' ideas about client-centered therapy have been especially influential in shaping how many clinicians operate (Figure 1.8).