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Lecture

Lecture Note for Chapter 16/Lecture 26

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Department
Psychology
Course Code
PSYA02H3
Professor
John Bassili

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PSYA02
Chapter 16 – Lifestyle, Stress, and Human Heath
Lecture 26
Slide 2: Stress: response to a stessor (something challenging in t he environment, i.e. predators,
pressure to reproduce, pressure to survive)
Stress is closely related to fight-or-flight response
A stress response includes: sympathetic arousal, stress hormones
If you live with only a little bit of stress, its f ine/adaptive, even good for you, but with sustained
stress for a long time, and with hormonal secretions occurring all the time; bad for health;
Chronic or accumulated stress can be detrimental to health
Slide 3: How do you measure stress?
Social Readjustment Rating Scale (SRRS) – standardized the amount of stress associated with a
number of events in life (i.e. the most stressful, losing a spouse: 100, divorce: 73, etc.); if
researchers were interested in looking at immigrants (for example), there would be different items
on the list; standardized as per the situation
-Person is at a certain level of comfor t, a challenge occurs changing that level, and
autonomic nervous system, hormonal systems are put to work, challenge is dealt with,
person has readjusted
VIDEO ON STRESS
Fight-or-f light response: response the body needs to protect itself from danger or to fight its way
out of danger
Cor tisol: hormon e we need, the brain recognizes a threat which activates the hypotha lamus,
which then organizes the response to the stress, sends it down t he spinal cord, to the adrenal
gland, where it releases adrenaline (which increases the amount of energy available to your
muscles).
Hypothalamus also sends a message to the pituitary gland, from t here, goes to the adrenal cortex,
where cortisol is made (which is an important protective hormone in a stress situation; helps to
tur n sugar into carbs faster, along with ot her effects that are helpful in the shor t r un, in the long
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Description
PSYA02 Chapter 16 Lifestyle, Stress, and Human Heath Lecture 26 Slide 2: Stress: response to a stessor (something challenging in the environment, i.e. predators, pressure to reproduce, pressure to survive) Stress is closely related to fight-or-flight response A stress response includes: sympathetic arousal, stress hormones If you live with only a little bit of stress, its fineadaptive, even good for you, but with sustained stress for a long time, and with hormonal secretions occurring all the time; bad for health; Chronic or accumulated stress can be detrimental to health Slide 3: How do you measure stress? Social Readjustment Rating Scale (SRRS) standardized the amount of stress associated with a number of events in life (i.e. the most stressful, losing a spouse: 100, divorce: 73, etc.); if researchers were interested in looking at immigrants (for example), there would be different items on the list; standardized as per the situation - Person
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