10-6 - What is a stressor o An environmental social or...

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What is a stressor? o An environmental, social, or internal demand that requires the individual to readjust his/her usual behavior patterns in order to restore balance or equilibrium o Stressor: the stimulus o Stress: individual’s physiological and psychological response to stressor History of Stress and Coping Research o Cannon (1932) Described the fight-or-flight response Applicable to acute stressors o Selye (1965) Extended cannon’s work to describe people’s responses to long term stress Selye’s General Adaptation Syndrome (GAS) o 3 stage model to explain effects of prolonged stress on two major systems nervous and endrocrine (hormonal) system Alarm Reaction o Body’s resources mobilize to respond to stressor Limbic system engages, frontal cortex disengages Stress hormones are secreted (epinephrine, norepinephrine, and cortisol) Stage of resistance o If stressor continues, body tries to adapt to stressor Physiological arousal declines tolow levels Body tries to replenish hormones Organism takes measures to reduce effects of the stressor (copes) o In the short term effects of coping with this stress can manifest as disrupted sleep, loss of appetite, poor digestion, lack of energy, low sex drive, etc.
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10-6 - What is a stressor o An environmental social or...

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