Final answer:
Carl Rogers recommended that therapists use reflection to mirror clients' thoughts and feelings, providing genuineness and empathy essential for effective therapy.
Step-by-step explanation:
Rogers recommended that therapists use a process of reflection. By this, he specifically meant that therapists should mirror clients' thoughts and feelings. This reflection is part of creating a therapeutic environment where clients feel understood and accepted. It involves therapists providing an environment of genuineness, empathy, and unconditional positive regard, which Rogers believed was critical for clients to deal with their problems effectively. This reflective strategy is used to facilitate personal growth and change through active listening and closely following the client's experience without judgment or interpretation.