EFFECTIVENESS - addresses underlying cause of psych/behavioural disorder
DA works on uncovering repressed unconscious conflicts/desires that may have occurred in early childhood
bringing them to the surface + confronting the issue > result in long-term end to the problems they were causing in later life
strength compared to other therapies (bio and behavioural) which only treat symptoms of problem
EXT - DA should therefore avoid problems such as 'revolving door' where people have to keep returning to therapy as symptoms reoccur