stress Flashcards
what is the first type of stress?
acute stress - the most common type of stress, immediate or short term, such as a near accident, exam or work deadline
what is the second type of stress?
episodic acute stress - repeated instances of short term stress, such as taking on too much work so experiencing frequent deadlines, stress will cease and become part of normal life
what is the third type of stress?
chronic stress - persistent stress over a long period, such as poverty, relationship problems, can be difficult to treat as they’re used to it being there
explain stress as a physiological response and its evidence
when stressed, the nervous system is activated and releases hormones. adrenaline, flight or fight, SAM. cortisol, glucose, HPA. Seyle, rats, GAS. Lazarus and Folkman, interaction between person and environment
what are the physical effects of stress?
GAS short term : increased blood pressure, sweaty palms, headaches.
chronic/episodic : physical illness, digestive problems, immune systems, heart disease
explain stress as a psychological response
feelings of isolation and low self-esteem, can lead to anxiety and depression, lifestyle changes such as drinking and smoking more, less exercise, less healthy diet, sleeping problems
what is the first biological explanation of stress?
sympathomedullary pathway (SAM) : when someone perceives a threat, hypothalamus activates sympathetic branch of ANS, causes adrenal medulla to release adrenaline and noradrenaline, increases energy, alertness, blood flow to muscles and respiration rate. when stressor stops, parasympathetic branch reduces heart rate. SAM is seen as an evolutionary response. effects on heart
what are the evaluation points for the bodies response to acute stress?
supporting evidence : Leor et al Northridge California earthquake 1994 + stress cardiomyopathy (BHS)
gender differences : Taylor et al oxytocin and testosterone rats
what is the second biological explanation of stress?
hypothalamic-pituitary-adrenal system (HPA) : hypothalamus releases corticotropic- releasing factor (CRF), causes pituitary gland to release adrenocorticotrophic hormone (ACTH) which stimulates adrenal cortex (adrenal gland-kidney) to release corticosteroids. cortisol maintains blood pressure, blood glucose levels, reduces immune system activity, lowers sensitivity to pain. Kuhlmann research, immunosuppression
what are the evaluation points for the bodies response to chronic stress?
issues with research : cause-and-effect, Lopez-Duran age and gender differences
low levels of cortisol : illness not until stressor removed, Heim chronic fatigue syndrome and PTSD
what is the first individual differences explanation of stress?
hardiness : hardy personality can cope with stressors, positive approach to stress. commitment, challenge, control, coping strategies, self-care, social support. Kobasa, hardy businessmen vs not hardy. Bartone, hardy soldiers less likely to have PTSD
what are the evaluation points of a hardy personality?
importance of all 3 elements : Maddi, all 3 needed to buffer stress. Sandvik 21 cadets, hardiness and blood samples, unbalanced more risk
issues with measuring hardiness : self-report, social desirability, different scales. Funk DRS measures all 3 equally and more positive
what is the second individual difference explanation of stress?
type a + type b : impatient and impulsive VS relaxed and flexible. Friedman and Rosenman, 3200 Californian men 39-59, 70% that developed CHD were type A, 13% of type A had heart attacks VS 6% of type B, type A is linked to CHD
what are the evaluation points of type a + type b personalities?
gender and cultural bias : originally only on men, type A traits for both, Baker, women show similar type A, same negative health effects. Helman, type A is culture based, USA, different values in western world
supporting evidence : Friedman, noisy puzzle, type A more stressed and higher adrenaline, more prone to CHD
what is the first social psychological explanation of stress?
life events : negative or positive, moving house, bereavement, ‘psychic cost’. Holmes, TB and disturbing occurrences, SSRS from 394 participants rating readjustment, baseline 50, 150+ 30%, 300 50%. Rahe, SRE, 2684 navy, +.118 correlation between life events and illness