Strengths
Explanatory power, it explains some bizarre behaviour like multiple personalities, dreams and daydreams
Middle ground = we are strongly influenced by conscious factors but once we're aware of them, we can exert our free will
Weaknesses
Poor methodology, samples are unrepresentative because they involve p's getting psychotherapy and cannot be replicated, some of Freud's ideas come from self analysis so they are not very valid at all
Ideas are vague and hard to test, test and measure... e.g. the oedipus and electra complexes and the unconscious mind