Passage: Person-centered therapy, also known as person-centered psychotherapy,  person-centered counseling, client-centered therapy and Rogerian psychotherapy, is a form of psychotherapy developed by psychologist Carl Rogers beginning in the 1940s and extending into the 1980s. Person-centered therapy seeks to facilitate a client's self-actualizing tendency, "an inbuilt proclivity toward growth and fulfillment", via acceptance (unconditional positive regard), therapist congruence (genuineness), and empathic understanding.

Question: How long did Carl Rogers pratice the psychotherapy?
1940s and extending into the 1980s