Evidence of Predictive and Incremental Validity of Personality Factors, Vocal Attractiveness and the Situational Interview

This study evaluates the impact of the situational interview, personality measures, vocal attractiveness, and interactions between personality and vocal attractiveness on job performance. In a concurrent validity study with 154 customer service employees, a structured, situational interview was conducted and three of the Big Five personality factors (agreeableness, conscientiousness, and extraversion) are measured with two different frames-of-reference: at-work and typical. Among the results are the validity of the situational interview and at-work personality measures is established; vocal attractiveness correlates with both interview ratings and job performance; and finally, agreeableness and conscientiousness are found to vary in a pattern related to levels of vocal attractiveness such that both personality factors predict performance more strongly for people with more attractive voices