Most contradictory approaches (by assumptions) -
Behaviourism or biological
NvN - more tricky! Some biological elements like innate drives but we learn much from our parents i.e. response during psychosexual stages, identifying with the same sex parent
HOWEVER the tripartite model is considered holistic by some
YES - psychic determinism
Causes/treatment of mental illness -
Psychoanalysis is an effective treatment for some conditions i.e. trauma