IN PUBLIC SERVANTS WE TRUST? A behavioural experiment on public service motivation and trust among students of public administration, business sciences and law

Using a laboratory experiment with monetary rewards to explore the effect of self-reported public service motivation (PSM) on choosing to study public administration and on trust behaviour reveals that students of public administration behave more trusting and trustworthy than business sciences and law students. Self-reported PSM is positively associated with trust behaviour, but does not explain trust differences between the three groups. This indicates that the normative orientation that underlies self-reported PSM exerts a stronger influence on behaviour in a low-cost decision than in a high-cost decision with long-term consequences such as choosing a field of study.