A form of psychotherapy based on cognitive therapy and behaviour modification, in which the client or patient learns to replace dysfunctional self-speech (such as I knew I'd never be able to cope with this job) with adaptive alternatives (The job's not going well, but I am capable of working out a plan to overcome the problems). Its applications include anger control, stress management, coping with anxiety, and developing social skills. US cognitive behavior modification. Also called cognitive behaviour therapy (CBT) or cognitive behavioural therapy. See also dialectical behaviour therapy, thought stopping. Compare behaviour therapy. CBM abbrev.