Describe what Behavioural Activation, (BA) is, mechanisms of change and how to complete a BA treatment programme. Posted on December 16, 2020 by Ambrose Words: 17Pages: 1Subject: PsychologyTopics: Assignment help, Behavioural, College essays, Essayhelp, mechanisms, treatmentDescribe what Behavioural Activation, (BA) is, mechanisms of change and how to complete a BA treatment programme.