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SKIN CONDUCTANCE RESPONSE (SCR) - Coggle Diagram
SKIN CONDUCTANCE RESPONSE (SCR)
stress response
eg. increased heart rate and BP and sweating
skin is electrically active and stress increases the skins ability to conduct electricity - known as SKIN CONDUCTANCE RESPONSE
adrenaline and noradrenaline cause a number of physiological responses
readings need to be taken in stressed and non-stressed states so comparisons can be made
use
a small voltage is applied across the electrodes. by measuring the current between them, conductance can be reported
measured through a polygraph
electrodes are placed on a persons index and middle finger
Villarejo et al. 2012
required to complete tests involving different levels of stress. eg. relaxed math test, exposure to anxiety-creating stimuli
SCR - were able to detect ppts different stress level with a success rate of 76.5%
used a computer operated stress sensor to measure the stress levels in 16 adult ppt
supports the idea that it SCR is a capable method of measuring stress
strength
avoids some of the problems associated with self-report measures (social desirability bias)
can be combined with recordings of heart rate, respiratory rate and blood pressure
allows for stress to be measured in an objective way
weakness
sympathetic arousal, which occurs in response to any emotions
eg fear, anger, surprise - not just stress
no specific response
weakness
can be affected by external factors (eg. temperature and humidity)
and internal factors (medications and alcohol)
criticised at being unreliable