Purpose – The field of cognitive-behavioural therapy contains many different theoretical models of psychopathology, with each discipline ascribing greater emphasis to a particular cognitive process or organisation of beliefs. This paper seeks to propose a method of integrating the two most widely practiced and researched schools of CBT; Beck ' s cognitive therapy (CT) and Ellis ' s rational emotive behaviour therapy (REBT). Design/methodology/approach – Although there exist a large degree of similarity between the two therapeutic approaches, the two models do differ in relation to their respective hypothesises regarding the core psychological variable in psychopathology. Cognitive theory hypothesises that negative representational beliefs are of central importance whereas rational emotive behaviour theory hypothesises that negative evaluative demands lie at the core of psychological disturbance. This paper evaluates these competing predictions on the basis of the available empirical literature. Resu