ERIC Number: ED050380
Record Type: RIE
Publication Date: 1970-Nov
Reference Count: 0
The Reliability and Validity of Salivation as a Measure of Individual Differences in Intrinsic Arousal. Report from the Project on Motivation and Individual Differences in Learning and Retention.
Farley, Frank H.; And Others
Two studies were reported which attempted to estimate the stability and construct validity of human salivary response as a measure of individual differences (IDs) in physiological arousal. Twenty-second base line estimates and 20-second response levels to four drops of lemon juice were measured, with the former value being removed from the latter to form the salivary score for a given subject. The first study obtained a test-retest correlation over 24 hours for the net salivation score of 0.78 (N = 25; p<.001). The second study involved the measurement of the threshold of fusion of paired light flashes [two-flash threshold (TFT)], a previously validated index of arousal, as well as salivation. The correlation between net salivation and TFT on 25 subjects was -.57 (p<.01). It was concluded that the salivary measure has demonstrated promising psychometric properties for use in ID research. (Author)
Publication Type: N/A
Education Level: N/A
Sponsor: Office of Education (DHEW), Washington, DC.
Authoring Institution: Wisconsin Univ., Madison. Research and Development Center for Cognitive Learning.