title: Understanding emotional expression using prosodic analysis of natural speech: refining the methodology.
abstract: Emotional expression is an essential function for daily life that can be severely affected in some psychological disorders. Laboratory-based procedures designed to measure prosodic expression from natural speech have shown early promise for measuring individual differences in emotional expression but have yet to produce robust within-group prosodic changes across various evocative conditions. This report presents data from three separate studies (total N = 464) that digitally recorded subjects as they verbalized their reactions to various stimuli. Format and stimuli were modified to maximize prosodic expression. Our results suggest that use of evocative slides organized according to either a dimensional (e.g., high and low arousal - pleasant, unpleasant and neutral valence) or categorical (e.g., fear, surprise, happiness) models produced robust changes in subjective state but only negligible change in prosodic expression. Alternatively, speech from the recall of autobiographical memories resulted in meaningful changes in both subjective state and prosodic expression. Implications for the study of psychological disorders are discussed.
authors.affiliation: Louisiana State University, Department of Psychology, 236 Audubon Hall, Baton Rouge, LA 70803, USA. acohen@lsu.edu
authors.forename: Alex S
authors.initials: AS
authors.lastname: Cohen
authors.forename: S Lee
authors.initials: SL
authors.lastname: Hong
authors.forename: Alvaro
authors.initials: A
authors.lastname: Guevara
mesh_terms: D000293:Adolescent; D000328:Adult; D000704:Analysis of Variance; D004644:Emotions / Q000502:physiology*; D019260:Expressed Emotion / Q000502:physiology*; D005260:Female; D006801:Humans; D007206:Individuality; D007398:Interpersonal Relations; D008297:Male; D009483:Neuropsychological Tests; D009716:Numerical Analysis, Computer-Assisted; D010775:Photic Stimulation / Q000379:methods; D011930:Reaction Time; D013060:Speech; D013061:Speech Acoustics; D013067:Speech Perception; D013068:Speech Production Measurement; D014705:Verbal Behavior / Q000502:physiology*; D055815:Young Adult