Hoofdzaak: Ook zonder lintje doet de biologie haar werk
"Ook zonder lintje doet de biologie haar werk." My science column in Trouw.
Hoofdzaak: Een complottheorie is zo verzonnen
"Een complottheorie is zo verzonnen." My science column in Trouw
In the eye of the beholder? An eye-tracking experiment on emergent
Integrating evolutionary signaling theory with a social attention approach, we argue that individuals possess a fast, automated mechanism for detecting leadership signals in fellow humans that is reﬂected in higher visual attention toward emergent leaders compared to non-leaders. To test this notion, we ﬁrst videotaped meetings of project teams and collected leadership ratings for the team members from three rating sources. Second, we provided 18 naïve observers with 42 brief, muted video clips of the team meetings and analyzed their eye gazing patterns. Observers gazed at emergent leaders more often, and for an average longer duration, than at non-leaders. Gender eﬀects occurred such that male emergent leaders received a higher number of ﬁxations than female emergent leaders. Non-verbal behavior analysis indicated that emergent leaders showed a higher amount of active gestures and less passive facial expressions than non-leaders. We discuss theoretical and methodological directions for emergent leadership research in teams.
Pride before the fall: Overconfidence predicts escalation of public commitment
Ronay, R., Oostrom, J. K., Lehmann-Willenbrock, N., & van Vugt, M. (2017). Pride before the fall: Overconfidence predicts escalation of public commitment. Journal of Experimental Social Psychology, 69, 13-22.
Basal testosterone, leadership and dominance: a field study and meta-analysis
Van der Meij, L., Schaveling, J., & Van Vugt, M. (2016). Basal testosterone, leadership and dominance: a field study and meta-analysis. Psychoneurendocrinology, 72, 72-79
This article examines the role of basal testosterone as a potential biological marker of leadership andhierarchy in the workplace. First, we report the result of a study with a sample of male employeesfrom different corporate organizations in the Netherlands (n = 125). Results showed that employees withhigher basal testosterone levels reported a more authoritarian leadership style, but this relationshipwas absent among those who currently held a real management position (i.e., they had at least onesubordinate). Furthermore, basal testosterone levels were not different between managers and non-managers, and testosterone was not associated with various indicators of status and hierarchy suchas number of subordinates, income, and position in the organizational hierarchy. In our meta-analysis(second study), we showed that basal testosterone levels were not associated with leadership in men norin women (9 studies, n = 1103). Taken together, our findings show that basal testosterone is not associatedwith having a leadership position in the corporate world or related to leadership styles in leaders. Wesuggest that basal testosterone could play a role in acquiring leadership positions through dominant andauthoritarian behavior.