What is the effect of cognitive change?

We now know that CRT can have an impact on cognitive function and that functional improvements (in terms of symptoms, social and work functioning) follow cognitive change. Given these positive empirical results, it would be easy for rehabilitation specialists just to copy successful programmes. But the effect sizes are modest for both cognition and functional outcome and if we are to improve the effects, reduce variability between individuals and increase consistency across settings, we need to look for more sophisticated models. If we can discover how cognition has an impact on functioning, we may then be able to develop CRT to maximise functional improvement.