Cognitive Sociocultural Psychodynamic Psychological Explanations of Depression Aim: Can I outline TWO psychological explanations for depression? Can I evaluate TWO psychological explanations for depression? • Although biological explanations for depression have attracted the most research support in recent years, psychological explanations have also been influential. • Possibly, some factors cause the development of depression whereas others maintain it. • Possibly, two or more factors are needed for the development of depression. • For example, someone may have low levels of serotonin, feel helpless and blame themselves for the negative events that happen to them. (Comer, 2003) Freud’s psychodynamic explanation • Mourning = natural grieving period after loss • Melancholia = a pathological illness (depression) when grief does not end • Depression = anger turned against oneself • unconsciously harbouring negative feelings towards loved ones • resent being deserted by them • normal to grieve, recall memories • abnormal to continue pattern of self abuse and self blame Cognitive – Beck’s theory of depression • Beck’s theory of depression (1975) = negative schema: a tendency to adopt a negative view of the world during childhood due to e.g. rejection or criticisms by teachers, peers or parents • Activated whenever they encounter a new situation that resembles the original • Based on cognitive biases in thinking such as over-generalisation (sweeping conclusions of self worth based on small piece of negative feedback) • Negative triad = pessimistic view of self, the world and the future Cognitive – learned helplessness (Siligman, 1975) • D learned when person tries and fails to control unpleasant experiences • = sense of loss on control = depression • Results in failure to initiate coping strategies in the face of stress and circumstances that CAN be controlled • D think about unpleasant events in a more pessimistic way = hold themselves responsible • ‘reformulated helplessness theory’ (Abrahamson et al, 1978) = cause of unpleasant events are: 1. internal depressive attributional style 2. stable 3. global Cognitive - hopelessness (Abrahamson et al, 1989) • Depression based on pessimistic expectations of the future • Expects bad rather than good things to happen to them in the important areas in their lives and • believe they don’t have resources to change the situation Evaluation • • • • • • • • • • Successful therapies: meta-analysis of Beck’s cognitive therapy concluded 80% benefited More effective than drug therapy Lower relapse rate Predictions of Beck’s theory are supported = depressed participants in studies who were given negative automatic thought statements became more depressed BUT does this prove cause and effect?? Seligman’s research on animals supported by human studies: college students exposed to uncontrollable aversive events were more likely to fail on cognitive tasks + other studies found that depressed college students performed worse of all on similar task Hopelessness model supported by research: participants assessed weekly with higher negative attributional style showed more symptoms of depression when stressed Negative attributional style might be more common in women because they are taught to think more negatively about themselves and this may help explain why more women suffer from depression Women 20% more likely to suffer from depression – younger and longer and more related to stressful life events Men might simply develop different disorders in response to stress: antisocial behaviour and alcohol abuse Gender differences also in response to stress: women – focus on negative emotions + seek professional help. Men – use distractions like alcohol Major Life Event Study • Brown and Harris (1978) • Episodes of depression almost always preceded by a major life event • Study of depressed women in Camberwell, London • 2 circumstances influence a person’s vulnerability to severe life events: * long term difficulties (marital problems) * vulnerability factors (3+ children under 14, not working outside home or lack of close relationship) - sample only women and British - women rely more on social support and thus more affected by loss - Stress Depression Depression Stress