 In cognitive therapy, as developed by its founder Aaron T. Beck and others, a client is taught to shift his or her cognitive focus from one thought or mental fixation to a more positive, realistic focus—thus the descriptive origins of the term "cognitive shifting".In "third wave" ACT therapy as taught by Steven C. Hayes and his associates in the Acceptance and Commitment Therapy movement, cognitive shifting is employed not only to shift from negative to positive thoughts, but also to shift into a quiet state of mindfulness.Cognitive shifting is also employed quite dominantly in the meditative-health procedures of medical and stress-reduction researchers such as Jon Kabat-Zinn at the University of Massachusetts Medical School.