Final answer:
Carl Rogers developed client-centered therapy, which emphasizes the patient's active role in therapy, supported by the therapist's unconditional positive regard, genuineness, and empathy.
Step-by-step explanation:
The individual who developed client-centered therapy is Carl Rogers. Rogers, an American psychologist, established the approach as a contrast to psychoanalytic methods. Instead of having the therapist direct the course of treatment, client-centered therapy encourages the patient to take a leading role. This therapeutic method rests on the therapist displaying unconditional positive regard, genuineness, and empathy, which creates a supportive environment for the patient to explore personal issues and work towards self-improvement. Carl Rogers' and Abraham Maslow's contributions to humanistic psychology emphasize the potential for good in all people and focus on personal growth, a contrast to the pathology focus of Freudian psychoanalysis.