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Psychology 415; Social Basis of Health Behavior Psychoimmunology 2 1 The stimulus
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Psychology 415; Social Basis of Health Behavior Psychoimmunology 2 2 Self-efficacy: Sources of efficacy judgments Feedback re: behavioral subgoals ( Cf: Karoly, Carver models) Sub-goals: concrete, specific discernable feedback Attitude change: Behavior attitude “Guided mastery” interventions Modeling Bandura & Walters: Coping model >> Mastery model Controls resources > rewarded > simple performance Similarity of model to participant: Peer-based interventions Social persuasion Normative / personal information Social network mechanism? Feedback post performance > simple attitude change Interpretation of somatic information E.g., “fear of fear” Cognitive representation of disease Miller C-SHIP model: Rx to “hot” disease or physical information
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Psychology 415; Social Basis of Health Behavior Psychoimmunology 2 3 Perceived control and stress Averill, types of control: Behavioral Brown: Bereavement stress mortality Learned helplessness Decisional Singer: stress Rx & perceived controllability Interpretative Taylor: “search for meaning” & coping w/cancer “Hopelessness” & depression Predictive DV literature / Averill data: predictability >> aversiveness
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Psychology 415; Social Basis of Health Behavior Psychoimmunology 2 4 Efficacy training immune system Immune parameters x Efficacy training stage x “Enhancer” v. “Suppressor” group
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Psychology 415; Social Basis of Health Behavior Psychoimmunology 2 5 Perceived control & stress, 2 Bandura; Consequences of low perceived control Subjective stress & negative affect Health risk behavior Autonomic activation HPA activation Plasma catecholamine secretion HPA activation decreased lymphocyte proliferation Induced self-efficacy Rapid efficacy gain immuno-enhancing High cortisol release immuno-suppressant
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Psychology 415; Social Basis of Health Behavior Psychoimmunology 2 6 Ideal Self-discrepancies & affect ActualOught Depression, disappointment OwnOtherOwnOtherOwnOther Dejection, loss of esteem Fear, perceived threat Guilt, self-recrimination Anxiety, fear, social anxiety Depression, sadness, self-disappointment
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Psychology 415; Social Basis of Health Behavior Psychoimmunology 2 7 Self-discrepancy model of stress. Acute negative self- appraisal Chronic availability of self-discrepancy Ideal :: Actual Ought :: Actual Chronic availability of self-discrepancy Ideal :: Actual Ought :: Actual Contextual activation of self- discrepancy Negative affect Depression Anxiety Negative affect Depression Anxiety NK suppression Cortisol secretion Actual (self- rated) stressful events ? ??
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Psychology 415; Social Basis of Health Behavior Psychoimmunology 2 8 Primed self-discrepancies NK activation “Normal” Ss show immune enhancement after priming with yoked stimuli Dysphoric Ss show immune suppression after self-priming with “ideal” stimuli Anxious Ss show immune suppression after self- priming with “ought” stimuli
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Psychology 415; Social Basis of Health Behavior Psychoimmunology 2 9 Robles et al.: Balanced immune responses Inflammation : attracts immune cells to injury site Induce adaptive “sickness behavior” Activates HPA axis HPA activation: Stimulates cortisol production Down-regulates pro- inflammatory cytokines Macrophages etc.
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Psychology 415; Social Basis of Health Behavior Psychoimmunology 2 10 Robles: Stress – modulated immune responses. A. Brain effects of stress: Reduce glucocorticoid receptors Disrupt receptor functioning Dysregulate HPA axis Decrease threshold for HPA arousal in response to stress Possible chronic HPA arousal Cortisol production Immune suppression
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Psychology 415; Social Basis of Health Behavior Psychoimmunology 2 11 Robles: Stress – modulated immune responses, 2. B. Cellular effects of stress: Disrupt functioning of corticoid receptors on cytokine-producing cells Less sensitive to the anti- inflammatory effects of cortisol
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Psychology 415; Social Basis of Health Behavior Psychoimmunology 2 12 Robles: Stress – modulated immune responses, 2. C. Immune suppression from stress / negative affect: HPA activation cortisol immune suppression Inhibits ability to fight off infection Chronic infections Inflammation
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Psychology 415; Social Basis of Health Behavior Psychoimmunology 2 13 Robles: Stress – modulated immune responses, 2. D. Proinflammatory cytokines Reduce or disrupt glucocorticoid receptors in the brain All four mechanisms Chronic elevated production of proinflammatory cytokines Direct effects on chronic disease and pathophysiology Indirect via, e.g., production of C- reactive protein. CRP
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Psychology 415; Social Basis of Health Behavior Psychoimmunology 2 14 Behavioral intervention designs Stress management Education Cognitive restructuring (simplified CBT) Coping skills training Support provision Relaxation Deep muscle “Autogenic” Mindfulness Disclosure Kemeny group: disclosure of sexual orientation Pennebaker: systematic writing / “uplifting” language Not typical: direct affect regulation (DBT) skills.
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Psychology 415; Social Basis of Health Behavior Psychoimmunology 2 15 Stress & coping model of immune supression Appraisal Coping Subjective (dis)stress Approach / active coping Avoidant / affective coping Unmeasured moderators Chronic (?) stress Arousal & activity Risk behavior: tobacco, etoh, drugs & sex… Risk behavior: tobacco, etoh, drugs & sex… Perceived threat / vulnerability Perceived control / self- efficacy Perceived Stress Life events Catecholamine / corticosteroid / HPA cellular & humoral immune cascade Catecholamine / corticosteroid / HPA cellular & humoral immune cascade Ψ closeness Mediating responses
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Psychology 415; Social Basis of Health Behavior Psychoimmunology 2 16 Alternate conceptualization Appraisal Coping Approach / active coping Avoidant / affective coping Chronic (?) stress Arousal & activity Risk behavior: tobacco, etoh, drugs & sex… Risk behavior: tobacco, etoh, drugs & sex… Perceived threat / vulnerability Perceived Stress Catecholamine / corticosteroid / HPA cellular & humoral immune cascade Catecholamine / corticosteroid / HPA cellular & humoral immune cascade Negative affect Perceived control / self- efficacy Depression Neuroticism Poor affect regulation Affect or thought suppression Depression Neuroticism Poor affect regulation Affect or thought suppression
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Psychology 415; Social Basis of Health Behavior Psychoimmunology 2 17 Stress & coping intervention model Appraisal Coping Subjective (dis)stress Approach / active coping Avoidant / affective coping Arousal & activity Risk behavior: tobacco, etoh, drugs & sex… Risk behavior: tobacco, etoh, drugs & sex… Perceived threat / vulnerability Perceived control / self- efficacy Mediating responses Cognitive reframing, Basic CBT techniques Bandura-esque self- efficacy training Coping skills training Relaxation training Depression treatment Behavioral interventions
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Psychology 415; Social Basis of Health Behavior Psychoimmunology 2 18 Thorton et al., Relaxation training NA inflammation Study population n = 45 breast cancer patients w / “clinically significant” depression scores on CES-D (20% of patient population) M = 45 days post-surgery Intervention Group-based (8-12 pt.) 4 months of weekly 90 min. sessions, 8 months of monthly sessions Targets: reduce stress & emotional distress enhance social adjustment, improve compliance with cancer treatment enhance health behaviors.
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Psychology 415; Social Basis of Health Behavior Psychoimmunology 2 19 Thorton et al., results Clear effects on 3 core Ψ outcomes: Depression Fatigue Pain tolerance Asymptote about 8 months
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Psychology 415; Social Basis of Health Behavior Psychoimmunology 2 20 Thorton et al., results, 2 More modest, but significant effects on immune / inflammation markers WBC counts T helper :: suppressor ratio Δ in Ψ variables less inflammation
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