• J Appl Psychol · Jul 2008

    Personality and leader effectiveness: a moderated mediation model of leadership self-efficacy, job demands, and job autonomy.

    • Kok-Yee Ng, Soon Ang, and Kim-Yin Chan.
    • Nanyang Business School, Nanyang Technological University, Singapore. akyng@ntu.edu.sg
    • J Appl Psychol. 2008 Jul 1; 93 (4): 733-43.

    AbstractThe trait theory of leadership is advanced by a joint investigation of the mediating role of (a) leadership self-efficacy (LSE = leader's perceived capabilities to perform leader roles) in linking neuroticism, extraversion, and conscientiousness with leader effectiveness and (b) the moderating role of job demands and job autonomy in influencing the mediation. Using K. J. Preacher, D. D. Rucker, and A. F. Hayes' (2007) moderated mediation framework, the authors tested the model (over a 2-year period) with matched data from 394 military leaders and their supervisors. Results showed that LSE mediated the relationships for neuroticism, extraversion, and conscientiousness with leader effectiveness. Moderated mediation analyses further revealed that LSE mediated the relationships for (a) all 3 personality variables for only those leaders with low job demands; (b) neuroticism and conscientiousness for only those leaders with high job autonomy; and (c) extraversion, regardless of a leader's level of job autonomy. Results underscore the importance of accounting for leaders' situational contexts when examining the relationships between personality, LSE, and effectiveness.

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