Despite the occasional outcries to the contrary, the field of behavior therapy is still growing, and the asymptote has not been reached yet. The umbrella of behavior therapy continues to enlarge and still is able to encompass new theories, new con cepts, new research, new data, and new clinical techniques. Although the number of new behavioral journals now has stabilized, we still see a proliferation of books on the subject. In the past few years, however, we have seen considerable specialization within behavior therapy. No longer is it possible to be a generalist and remain fully abreast of...