What is an example of a physiological measure?

A physiological measure refers to a method of quantifying bodily responses that are often indicative of psychological states or processes. Skin conductance, which is the correct answer, measures the electrical conductance of the skin, which changes with sweat gland activity and can indicate levels of arousal or stress. This measurement is frequently used in psychological research to assess emotional responses.

Other options do not fit the criteria for physiological measures. Body mass index, while related to physical health, is a derived statistic and does not directly measure a physiological response. Survey responses reflect subjective self-reports, which provide insights into attitudes or feelings but do not measure physiological processes. The number of hours slept is a behavioral measure; it quantifies sleep duration but does not inherently assess the body's physiological response in the same way skin conductance does. Therefore, skin conductance stands out as a direct measure of physiological responses.