A chronotype circadian model of charismatic leadership expressions and perceptions

We investigate the impact of the circadian process (24-h biological cycles that influence sleep/wake periods) and chronotypes (individual differences in the timing of those cycles) in charismatic leadership. We theorize that the expressions of charismatic signals by leaders, and the perceptions of those signals by followers are influenced by the circadian process. Moreover, considering that individuals vary in their sleep awake preferences (larks vs. owls), we argue that chronotype interacts with time of day to influence expressions and perceptions of charismatic leadership. In Study 1, we found that synchrony between leader chronotype and time of day affects expressions of charismatic leadership. In Study 2, we turned our attention to the followers' circadian process and found that synchrony between a follower's chronotype and time of day affects follower's perceptions of charismatic leadership. Our new model highlights how charismatic leadership can be driven by circadian process.