Published online by Cambridge University Press: 09 July 2009
The reliability and validity of Psychological Stress Evaluator (PSE) output and frequency modulation suppression as an inaudible vocal measure of stress-arousal was further explored, using a new interval scoring method. ‘Yes’ answers to 6 neutral questions were obtained from 106 volunteers 2 weeks before, the day before and one week after a stress-provoking event (oral comprehensive examinations for an MS degree). The data show excellent construct validity and good but not high internal consistency (0·77–0·81) and test-retest (0·72–0·74) reliability. Interrater reliability ranged from 0·94 to 0·98. Correlations of PSE output with other psychological and physiological measures (criterion-related validity) was very poor.