Like many psychotherapy researchers, I have been fascinated by the rol
e of ''specific'' and ''nonspecific'' (or common) factors from the beg
inning of my career. For a long time it was erroneously believed that
nonspecific factors required no skills on the part of the therapist wh
ereas specific factors were equated with specialized training and expe
rtise. Eventually, my fellow researchers at Vanderbilt and I concluded
that the two terms are misnomers that have beclouded rather than clar
ified the basic issues. In the end, I became convinced that therapists
' skills contribute materially to the outcome of therapy and that thes
e skills, rather than being specific techniques, are much more accurat
ely described as the ability to manage the complex human relationship
that is the essence of psychotherapy.