Chapter 6 (Stress) Flashcards
(35 cards)
Stress
- a negative emotion
Stressors
a STRESSFUL EVENT such as noise, the commute to work, death of a family member
Person-environment fit
personal resources sufficient to meet the demands of the environment
Example of Person-environment fit
Examples:
- a person's resources are more than adequate to deal with a difficult situation, he or she may feel little stress and experience a sense of challenge instead. - when the person perceives that his or her resources will probably be sufficient to deal with the event but only at the cost of greater effort then he or she may feel moderate stress - when the person perceives that his or her resources will probably not suffice to meet an environment stressor then he or she may experience high levels of stress.
Types of Stressors
Life Events and Daily Hassles
Basic Ideas of Cannon’s Research
Fight or flight Response
-Cannon proposed that physiological response mobilizes the organism to attack the threat or to flee
Fight
refers to aggressive response to stress, such as getting angry and or taking action
Flight
refers to social withdrawal or withdrawal through substance use or distracting activities
Selye’s General Adaptation Syndome
- alarm
- resistance
- exhaustion
Alarm
the organism become mobilized to meet their threat
Resistance
the organism makes efforts to cope with the threat, as throughout confrontation
Exhaustion
occurs if the organism fails to overcome the threat and depletes it physiological resources in the process of trying
Taylor’s Tend and Befriend approach
- in addition to fight-or-flight, humans respond to stress with social affiliation and nurturant behavior
- may depend on underlying biological mechanisms
- theory supported by women who respond to stress by turning to others
Underlying Biological Mechanism
Oxytocin
Oxytocin
is a stress hormone,rapidly released in response to at least some stressful events, and it effects are especially influenced by estrogen (role in women and stress)
primary appraisal processes
When an individual confronts a new or changing environment.
- events may be perceived as positive, neutral or negative in their consequences
- negative events further appraised for possible harm,threat or challenge
secondary appraisal processes
- assessment of one’s coping abilities and whether they are sufficient to meet the harm, threat
and challenge of an event
Harm
is the assessment o the damage that has already been done by an event
Threat
is the assessment of possible damage that may be brought about by the event
Physiology of stress
Sympathetic activation (SAM system) HPA activation (HPA or HPAC system)
SAM System
Sympathetic – Adrenal (Medullary)
Cortex (appraisal process) –> Hypothalamus –>Sympathetic Nervous System Arousal (fight-or-flight)–>Medulla (middle) of Adrenal glands release Epinephrine (adrenaline) and Norepinephrine (noradrenaline) increased blood pressure, increased heart rate, diaphoresis, pupil dilation, constriction of peripheral blood vessels.
HPA activation
Hypothalamus-Pituitary-Adrenal Cortex
Hypothalamus releases corticotrophin-releasing-hormone –>stimulates the pituitary gland –> adrenocorticotropic hormone –> adrenal cortex –>glucocorticoids (cortisol).
Cortisol = reduces inflammation, increases blood pressure and blood sugar, reduces immune responses
Long-term stress
excessive discharge of epinephrine ad norepinephrine can lead to:
suppression of the cellular immune function: increase bp and heart rate, ventricular arrhythmias, neurochemical imbalance, and may contribute to psychiatric disorders.
Allostatic load
- physiological systems within the body fluctuate to meet demands of stress
- can be assessed by different indicators