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PHSI 208 (96)
Lecture

chapter 35

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Department
Physiology
Course
PHSI 208
Professor
Neil Hibbert
Semester
Fall

Description
PSYCHOLOGICAL THEORIES OF MOOD DISORDERS: PSYCHOANALYTIC THEORY OF DEPRESSION: Freud; during the oral period, a child’s needs may be insufficiently or oversufficiently gratified, causing the person to become fixated in this stage. With this arrest in psychosexual maturation, the person may develop a tendency to be excessively dependent on other people for the maintenance of self-esteem. Freud hypothesized that after the loss of a loved one, the mourner first interjects, or incorporates, the lost person’ he identifies with the lost one, perhaps in a fruitless attempt to undo the loss. Because we unconsciously harbour negative feelings toward those we love, the mourner then becomes the object of his own hate and anger. The period of introjections is followed by a period of mourning work, separates himself from the person who has died or has died or disappointed him and loosens the bonds imposed by introjections. But the mourning work can go astray and develop into an ongoing process of self- abuse, self-blame and depression in overly dependent individuals. COGNITIVE THEORIES OF DEPRESSION: Beck’s Theory of Depression: depressed individuals feel as they do because their thinking is biased toward negative interpretations. The negative schemata acquired by depressed persons are activated whenever they encounter new situations that resemble in some way, perhaps only remotely, the conditions in which the schemata were learned. An ineptness schema can make depressed individuals expect to tail most of the time, a self- blame schema burdens them with responsibility for all misfortunes and a negative self-evaluation schema constantly reminds them of their worthlessness. Negative schemata, together with cognitive biases or distortions, maintain what Beck called the negative triad: negative views of the self, the world, and the future. The following describes the principal cognitive biases: • arbitrary inference: a conclusion drawn in the absence of sufficient evidence or of any evidence at all. • Selective abstraction: a conclusion drawn on the basis of only one of man elements in a situation. • Overgeneralization: an overall sweeping conclusion drawn on the basis of a single, perhaps trivial, event. • Magnification and minimization: exaggerations in evaluating performance. IN Beck’s theory, our emotional reactions are a function of how we construe our world. The interpretations of depressed individuals do not mesh well with the way most people view the world, and they become victims of their own illogical self-judgements. Depressed people endorse more negative words and fewer positive as self-descriptive. Second, they have a cognitive bias; they gave greater recall of adjectives with depressive content, especially if the adjectives were rated as self-descriptive. depressed people take longer to colour-name words that varied in their content; neutral, depression-oriented words, suggesting that these themes were more cognitively accessible for them. A deployment of attention task to show that dysphoric and clinically depressed individuals do not seem to selectively attend to negative or positive material but that non-depressed individuals have a protective bias that involves diverting their attention away from negative stimuli and focusing instead on positive stimuli. Beck and others have found that depression and certain kinds of thinking are correlated, but a specific causal relationship cannot be determined from such data; depression could cause negative thoughts, or negative thoughts could cause depression. The data do not equivocally support the idea that negative thinking causes depression. Helplessness/Hopelessness Theories: Learned Helplessness: • An individual’s passivity and sense of being unable to act and control his or her own life is acquired through unpleasant experiences and traumas that the individual tried unsuccessfully to control • Seligman’s dogs acquired a sense of helplessness when confronted with uncontrollable aversive stimulation. Attribution and Learned Helplessness: • Depressive parad
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