First-session competency: the brief strategic therapy scale-1.

The first session in brief strategic therapy is the most critical phase of treatment. More than a mere "assessment phase," the first session in a true intervention sets the stage for all subsequent therapeutic maneuvers. This article presents a supervisory observation tool, the Brief Strategic Therapy Scale-1 (BSTS-1), a fidelity measure proposed as a more formal method of analyzing performance and competency of the therapist for the first session. During scale development, a narrow group of expert judges defined the core skills of therapists and determined the structure/phases of a brief strategic therapy first session. In addition, expert collaborators gave feedback on the scale's usability. This article concludes with the BSTS-1.