One important delineation is that therapists are obligated to protect clients' confidentiality, while clients are not obligated to protect therapists' confidentiality. This makes equal disclosure problematic.

I am on the side of Rogers that it's advantageous for therapists to work from their own experience, and ride a happy medium. I don't want to be burdened with my therapist's deepest darkest issues, nor do I want her to waste our sessions detailing her weekend. However I do want to know enough about her to feel comfortable trusting her. I don't agree with therapists that don't disclose last names, marital status, professional background, opinions, and so on. I wouldn't feel like I were talking to a person.