Counseling process-outcome research studies process variables' impact on outcome. Person-centered theory, cognitive theory, behavior theory, psychoanalytic theory and some other theories all contributed to this research field. Process-outcome research focuses on the relationships between process variables and outcome. Main process variables under research are therapist response modes, client behavior in counseling, therapeutic alliance and important contents in counseling. Fruits in this field are not so rich at present, probably because the r...