Salivary cortisol and alpha-amylase levels during an assessment procedure correlate differently with risk-taking measures in male and female police recruits.
Recent laboratory studies have shown that men display more risk-taking behavior in decision-making tasks following stress, whilst women are more risk-aversive or become more task-focused. In addition, these studies have shown that sex differences are related to levels of the stress hormone cortisol (indicative of activation of the hypothalamus-pituitary-adrenocortical-axis): the higher the levels of cortisol the more risk-taking behavior is shown by men, whereas women generally display more risk-aversive or task-focused behavior following higher levels of cortisol. Here, we assessed whether such relationships hold outside the laboratory, correlating levels of cortisol obtained during a job-related assessment procedure with decision-making parameters in the Cambridge Gambling Task (CGT) in male and female police recruits. The CGT allows for discriminating different aspects of reward-based decision-making. In addition, we correlated levels of alpha-amylase [indicative of activation of the sympatho-adrenomedullary-axis (SAM)] and decision-making parameters. In line with earlier studies men and women only differed in risk-adjustment in the CGT. Salivary cortisol levels correlated positively and strongly with risk-taking measures in men, which was significantly different from the weak negative correlation in women. In contrast, and less strongly so, salivary alpha-amylase levels correlated positively with risk-taking in women, which was significantly different from the weak negative correlation with risk-taking in men. Collectively, these data support and extend data of earlier studies indicating that risky decision-making in men and women is differently affected by stress hormones. The data are briefly discussed in relation to the effects of stress on gambling.
Department of Organismal Animal Physiology, Radboud University Nijmegen Nijmegen, Netherlands.
Ruud
R
van den Bos
Police Academy, Recruitment and Selection Apeldoorn, Netherlands.
Ruben
R
Taris
Police Academy, Recruitment and Selection Apeldoorn, Netherlands.
Bianca
B
Scheppink
Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Utrecht University Utrecht, Netherlands.
Lydia
L
de Haan
Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Utrecht University Utrecht, Netherlands ; Centre for Human Psychopharmacology, Swinburne University of Technology Melbourne, Australia.
Joris C
JC
Verster
Cambridge Gambling Task; alpha-amylase; cortisol; decision-making; humans; sex