ABSTRACT: Several recent experiments are claimed to have tested conflicting predictions of cognitive dissonance and self-perception theories. It is argued that these claims fail to take into account the capacity of each formulation to account adequately for results "predicted" by the other. This argument is then continued, at a metatheoretical level, to reach the conclusion that the 2 theories are not capable of producing unequivocally contradictory predictions of cognitive consequences of experimental procedures.