Stress Flashcards
GAS
General adaptive syndrome
Selye
adapting to a stressor
GAS
alarm reaction- when the stressor is perceived the psychological response is activated for fight or flight
resistance- body trys to adapt by resisting the stressor the parasympathetic nervous system is activated to conserve energy as stress is becoming chronic
exhaustion- body fails to adapt to chronic stressor, resources become drained and symptoms of sympathetic arousal appear again, stress related illnesses now likely-alopecia
research into GAS
selye
exposed rats to various stressors, regardless of stressor the same response occurred 6-48 hours after stressor was presented.
research into GAS
Mason
replicated selye procsudure using monkeys. exposed them to 7 stressors, different stressors have different effects on urinary cortisol levels
Weaknesses to GAS
unethical
extrapolation issues
Mason- individual/gender differences in cortisol/adrenaline levels
strengths of GAS
Selye- observed human patients and found they shared common symptoms eg aches and pains no matter the injury. same result with rats. physiological reaction same
practical application to reduce symptoms.
SMP
Sympathomedullary pathway
sympathomedullary pathway
SMP
hypothalamus triggers activity in the sympathetic nervous system, ACTH is released.
adrenaline and noradrenaline are released into the blood stream
adrenaline and noradrenaline effect the body in different ways eg. heart rate
research in SMP
Taylor et al
found acute stressors produce fight or flight response in men however women produce tend and befriend due to women producing more oxytocin which promotes relaxation and nursing
research into SMP
mccarly
blood plasma levels of adrenaline and noradrenaline were equal in rats of varying ages before subjecting them to an electric shock for one minute. older rats has lower levels after the shock shows older rats hormones decrease so struggle to adapt.
research into SMP
horwatt
animals exposed to same stressor everyday for several weeks. SMP started to adapt as catecholamines changed production.
strengths of SMP
objective-reliable
fight/flight seen in all mammals- reductionist, generalisable
people without hormones supplements need adrenal glands- practical application
weaknesses of SMP
variations of level and type of hormones released-Taylor et al- validity
ignores psychological factors- Lazarus- add conscious thought, not valid
gender differences-Taylor
extrapolation
HPA
hypothalamic pituitary-adrenal system
Hypothalamic pituitary-adrenal system
HPA
hypothalamus triggers the release of CRH, this then stimulates the interior pituitary gland and releases ACTH.
ACTH then travels through the body and stimulates the adrenal cortex, the adrenal cortex then releases cortisol that converts protein to glucose giving the blood energy this is needed to replace what was used up by the bodys first reaction to stress
long term effect of high cortisol levels can damage the immune system and negatively impact memory.
Weaknesses of HPA
Mason- different individuals produce different levels of stress hormones when exposed same stressor-individual difference
people are more active to cognitive or emotional stressors- Symington et al- conscious terminal cancer patients experienced more stress then those in a coma
strengths of HPA
prolonged activation of HPA can lead to crushing’s syndrome-practical application to develop treatment
objective- reliable
Direct effect of stress
stress response-glucose in blood-furring of the arteries-heart attach
indirect effect of stress
stress-body can’t cope-illness
changes due to stress
increased heart rate increased blood pressure short of breath increased sweating slows immune system slows digestion blood clots increased stress hormones increased stomach acid hormones eg ageing/sex decrease increase blood sugar blood flows to muscles
immunosuppression
chronic stress
stress response-activates HPA- produces cortisol- inhibits production of lymphocytes(white blood cells)- invading viruses make us ill as bacteria isn’t attacked
Research into immune suppression
Kiecolt-Glaser at al
blood samples from medical students. (49 males/26 females volunteers) samples taken a month before and during exams. immune functioning assessed by T cell activity. blood sample from month before contained more t-cells then during exams
research into immune suppression
Evans et al
students giving mildly stressful presentation had increased sigA(anti-body) suggesting short term stress can beneficial to the functioning to immune system
Cardiovascular disorder
sympathetic nervous system constricts blood vessels increasing blood pressure and heart rate- increased heart rate wears away the lining of the blood vessels- increased glucose levels leads to clumps blocking the vessels
research into cardiovascular disorders
williams
13000 people completed a 10 question anger scale. 6 years after test people who scored high on anger scale were 2.5x more likely to have a heart attach
research into cardiovascular disorder
cobb and rose
compared medical records of air traffic controllers with other air traffic worker. air traffic controllers has higher levels of hypertension
Social readjustment rating scale
Holmes and Rahe
443 potentially stressful events used 1000's of medical records marriage arbitrary measure of 500 units sample of 400 asked to rate stressfulness of each event death of a spouse most
research into SRRS
Rahe et al
American sailors, found positive correlation between life event and physical illness of 0.118
research into SRRS
stone et al
had married couples fill in daily checklist of events daily if undesirable events increased illness often occurred
strengths of SRRS
supportive research
real life applications- self help books
predictive power
shows robust signification correlation
weaknesses of SRRS
subjective
retrospective data
as evidence is correlation can’t establish direct cause and effect
extraneous variables
Daily hassles and uplifts scale
Kanner et al
scale consisting of 117 hassles meansure on 7 categories
135 uplifts on same categories
3 point scale
100 american participants (52 women 48 men)
tested once a month for 10 months
Research into daily hassles and uplifts
Boutteyre at al
relationship between daily hassles and mental health of students moving to uni
first year psych students
complete this and becks ABC to measure depression
positive correlation between students suffering from depression and score on daily hassles
research into daily hassles and uplifts
Gervais
how daily hassles and uplifts affected job performance for nurses
asked nurses to keep a dairy for a month recording all daily hassles and uplifts
hassles increased job strain while uplifts increased job performance
Weaknesses of daily hassles and uplifts
retrospective data
social desirability
correlation-no direct cause and effect
Strengths of daily hassles and uplifts
supportive research
cost effective
quantitative data
Why study workplace stress
Cost to tax payer
Performance
Presenteeism
Risks to health
Research into role conflict
Increase in mothers participation in the workforce but little change in gendered allocation of household tasks
Practical applications of workplace stress
Ritvanen et al
Aerobic fitness to reduce psychological stress for teachers
26 participants
Monitored adrenaline, noradrenaline, cortisol, bp, hr, muscle tension and perceived stress
High levels of exercise lower physiological reactions to stress
Practice application to workplace stress
Galantinao
Mindfulness
Association of subject reported stress and symptoms in health-care professionals
8 weeks mindfulness training
Reduce symptoms
Factors that contribute to workplace stress
Workload
Control
Research into workplace stress
Marmot et al
7372 civil servants in London
Longitudinal study-5 years
Self report
Assessed for cardiovascular disease
Controlled extraneous variables e.g.smoking
No correlation between workload and stress
Lower grades of civil servants had more incidents of cardiovascular disease
Research into workplace stress
Johansson et al
Difference in stress levels between workers in a sawmill
24 male at a Swedish sawmill
High risk group-little control over work due to machinery involved. All wages dependent on them
Low risk group-more control, greater flexibility, less responsibility
Natural experiment
Adrenaline, ACTH, sickness, absenteeism
High risk adrenaline levels higher, more stress hormones on work days then rest days
Weaknesses of workplace stress
Reductionist
Hard to generalise
Karaseks- demands/control model not valid
Strengths of workplace stress
Practical applications
Objective research
Marmot-big sample size
Ways of measuring stress
Hassles and uplift
Life changes
Skin concordance response
Skin concordance response
Measured skin resistance to electricity
Arousal of the autonomic nervous system
Electrode attached to index/ middle finger
As sweat increases so does electricity conducted
Used alongside polygraph
Tonic skin concordance level
Baseline
No stimulus
Used to compare
Phasic concordance response
Experience a stimulus
Strengths of skin concordance response
Objective Can be used for everyone as established baseline Useful Practical applications Cheap
Weaknesses of skin concordance response
Can’t be used for stabiles(people who don’t show a physiological response to stress)
Needs a train practitioner
Affected by extraneous variables
Research into skin concordance response
Bakker
Results can differ from day to day with same participant
Characteristics of type A personality
Impatient
Competitive
Hostile