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PSYC 2740 Midterm: Personality Midterm 2

6 Pages

Course Code
PSYC 2740
Stephen Lewis

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Personality Midterm 2 Chapter 7 Psychological approaches Traumatic brain injury can lead to changes in personality o Decreased ability to control impulses o Higher impulsivity Disruption of frontal lobes (control centre) Can be measured reliably and mechanically Characteristics functioning of organ systems o Nervous (brains and nerves), cardiac (heart, arteries, veins), muscoskeletal Diff in physiological make can make a diff in psychological functioning o Sensitive nervous system = sensitive to loud sounds and therefore introverted Theoretical bridge o Condition (audience) personality trait (shyness) psychological response (anxiety) psychological indicator (heart rate) behaviour (avoidance) o Researchers must be able to build the theoretical bridge between personality dimensions of interests and physiological variables Physiological measures Emotional reactivity intensity and persistence of emotion in response to stimuli o Thought to be elevated among those who self injure negative events + stressful tasks o 2 groups those who have history of self injury and those who dont people with history have elevated skin conductance and more negative emotional reactivity to stress also quit game soon lower distress tolerance o mot common physiological measures obtained from electrodes from surface on skin non invasive no discomfort restricted movement telemetry electrical signals sent through radio waves, not wired 3 physiological measures o electro-dermal activity skin conductance even before sweating is available small amount of electricity because of water some people show in the absence of external stimuli some rated high on anxiety and neuroticisms appears to have sympathetic nervous system that is in a state of chronic activation o cardiovascular activity heart and associated blood vessels blood pressure, heart rate blood pressure pressure exerted by the blood on the inside of the artery wall systolic large, max pressure within the cardiovascular system produced when heart muscle contracts diastolic small, resting pressure common measure of stress response heart rate expressed in beats per minute (BPM) as interval between beats becomes shorter = heart is beating faster distressed, anxious fearful or more aroused than normal cardiac reactivity increase in blood pressure and heart rate in times of stress associated with type A personality behaviour patterns characterized by impatience, competitiveness, hostility o brain activity electroencephalogram (EEG) measures brain activity via electrodes to determine areas of brain activity participant can be asleep, awake but relaxed or doing a task such measures can provide info about patterns of activation in various regions of the brain may be associated with different types of information proce
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