title: Reliability and validity of an interval measure of vocal stress.
abstract: 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.
mesh_terms: D000328:Adult; D001794:Blood Pressure; D005260:Female; D006339:Heart Rate; D006801:Humans; D007821:Laryngeal Muscles / Q000503:physiopathology*; D008014:Lie Detection; D008297:Male; D008875:Middle Aged; D009132:Muscles / Q000503:physiopathology*; D010555:Personality Inventory; D011569:Psychiatric Status Rating Scales; D013315:Stress, Psychological / Q000175:diagnosis* / Q000503:physiopathology; D014831:Voice; D014833:Voice Quality