The counselor first conducts an extensive orientation with the client, beginning with the assessment described above, followed by the presentation of the biosocial theory on which it is based. During the orientation (which can last multiple sessions), the therapist and client typically agree to a length and format of treatment. In full-scale DBT, this means a commitment of 1 year, and it includes attendance at individual therapy and skills-training groups. In these sessions, it is very important that the therapist establish a strong alliance with the client, so validation is used liberally. Stylistically, DBT blends a matter-of-fact, somewhat irreverent, and at times outrageous attitude about current and previous parasuicidal and other dysfunctional behaviors with therapist warmth, flexibility, responsiveness to the client, and strategic self-disclosure.