Physiological Approaches

Physiological Approaches - Physiological Approaches...

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Physiological Approaches
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Electrodermal Activity (EDA): Skin Conductance ± Most obtained by electrodes or sensors placed on the skin surface. ± Advantage: Noninvasive, no discomfort. ± Disadvantage: Movement constrained. ± Electrodermal activity: ± Due to increased sweat with arousal, skin conductance of electricity increases. ± Can measure responses to various stimuli, including sudden noises, emotionally charged pictures, pain, anxiety, fear, guilt. ± Some people show EDA in the absence of external stimuli— associated with anxiety and neuroticism.
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Cardiovascular activity ± Blood pressure: ± Measure of, e.g., stress reactivity. ± Heart rate: ± Increases with anxiety, fear, arousal, cognitive effort. ± Cardiac reactivity: ± greater than normal increase in blood pressure and heart rate when performing task such as backward serial subtraction. ± Associated with Type A personality-
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Brain Activity ± Brain spontaneously produces small amounts of electrical activity. ± measured by electrodes on scalp—electroencephalograph (EEG). ± Evoked potential technique- ± Uses EEG, but the participant is given a stimulus and the researcher assess specific brain response to stimulus. ± Brain imaging techniques- ± Map structure and function of brain. ± Positron emission tomography (PET). ± Functional magnetic resonance imaging (fMRI).
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Physiologically Based Theories of Personality ± Extraversion-Introversion ± Sensitivity to Reward and Punishment ± Sensation Seeking ± Neurotransmitters and Personality ± Morningness-Eveningness ± Brain Asymmetry and Affective Style
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± Measured by Eysenck Personality Questionnaire (EPQ). ± High extraversion: Talkative, outgoing, likes meeting new people and going to new places, active, bored easily, hates routine. ± Low extraversion: Quiet, withdrawn, prefers being alone or
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This note was uploaded on 01/06/2012 for the course PSYCH 2316 taught by Professor Michaelrose during the Spring '11 term at Collins.

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Physiological Approaches - Physiological Approaches...

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