What does it mean for positive psychology to claim to be scientifically grounded? This presentation will consider this question from the point of view of a teacher presenting positive psychology as a psychological science and in light of the current "credibility crisis" in science. Particular attention will be given to the example of research and related assertions addressing gratitude and gratitude-inspired interventions. The concrete argument to be advanced through this examination is that the realities and responsibilities of science ought to temper promotions of positive psychology.