Chap 10, 12, 13, 14, 15 Flashcards
(275 cards)
chapter 10
stress and health
Health psychology
subfield of psychology
• how behavior, cognition, and physical health are interrelated
> causes and treatment of physical illness
> maintenance of health
stress
physical and psychological response
Stressor
specific events or chronic pressures
Types of stressors
can be positive or negative
• catastrophic events (threatening life events, longer-lasting)
• major life events (married, divorce)
• daily hassles (work, exams, projects, finances)
Stress ratings (CUSS)
a significant indicator of future illness (can affect immune system)
Distinction between acute and chronic stressors:
• ACUTE stressors: an event with a due date or clear indication of the beginning, middle, and end (immediate, short-lived) • CHRONIC stressors: worry and anxiety → life-long (allostatic load: cumulative impact) Stress appraisals (perception):
Perceived stress
a subjective evaluation of stress in response to events, depending on appraisal (related to how we cope, challenge→ motivate (adapted), looming→ less motivated)
Stress appraisal theory
appraisal of an event and our role in it shape our emotional experience of it
Psychological reactions:
• Primary appraisal: interpretation of stimulus as stressful or not
• Secondary appraisal: can stressor be handled? (or not?) can we cope?
> negative appraisal = threat (overwhelmed, feeling of not having control) inc BP
> positive appraisal = challenge (positive outcomes) motivating factor
Sympathetic-adreno-medullary (SAM) axis
a physiological system that governs the body’s IMMEDIATE response to a stressful event (fight or flight response)
• mobilizes the sympathetic nervous system
Hypothalamic-pituitary-adrenal (HPA) axis
a physiological system that governs the body’s PROLONGED/CHRONIC response to a stressful event (during resistance phase, after SAM) - more studied (cortisol released, increase BS (help with energy), suppressing the immune system)
Stress effects on the immune system
stressors – hormones (glucocorticoids) flood the brain
• immune system less effective b/c fewer lymphocytes
• release of cytokines
• psychoneuroimmunology
> study of how the immune system responds to psychological variables
> Susan Lutgendorf (tumor environment, effects of stress on cancer, affects immune system and survival rates. Social support as well)
Stress effects on health - heart and circulatory system:
• atherosclerosis
> main cause of coronary heart disease
Intensity, drive, anger, and hostility linked to
increased rates of heart disease
Diathesis-stress model:
(predisposition) - the way you think about things and frame things
Differential sensitivities hypothesis
the idea that some people have a genetic predisposition (makes them more likely) to be more strongly affected by variation in their environment
Stress effects on health - aging
stress significantly accelerates the aging process (high levels of cortisol have an effect on memory) (telomeres)
Telomeres
caps at the end of each chromosome that protect the ends of chromosomes and prevent them from sticking to each other (every time cell divides caps become shorter, cortisol shortens them even more)
• shorter telomeres: increased risk of cancer, cardiovascular disease, diabetes, depression
Perceived control:
• more effective coping
• no control = chronic stress (lack of perceived control)
> learned helplessness = perceived lack of control
Example of perceived control → 3 groups of dogs:
Group 1 put in harnessed (kept from moving) - control group
Group 2 was given electric shocks at random times, pressing bar → stopped shock
Group 3 yoked group - connected to the experiences in group 2 (dog in group 2 got shocked, dog in group 3 got shocked) group three didn’t have the ability to stop shock (overtime those dogs didn’t have the ability to stop shock - had learned they couldn’t do anything to stop it)
Problem-focused coping
approaching stressful situations with a belief that one can proactively solve the problem (people who do think they have control, find a way to cope)
How we cope:
- How we perceive the stress
- Sense of control over the stress
- How people are going to evaluate us
Coping with stress
(personality/ traits) having a GOOD SENSE OF HUMOR does seem to provide health benefits