Social rejection can increase aggression, especially among people high in rejection sensitivity.Rejection impairs self-control, and deficits in self-control often result in aggression. A dose of glucose can counteract the effect of situational factors that undermine self-control. But no research has integrated these literatures to understand why rejection increases aggression, and how to reduce it. Using the I 3 model of aggression, we proposed that aggression would be highest under conditions of high instigation (rejection), high impellance (high rejection sensitivity), and low inhibition (drinking a beverage sweetened with a sugar substitute instead of glucose). As predicted, aggression was highest among participants who experienced social rejection, were high in rejection sensitivity, and who drank a placebo beverage. A dose of glucose reduced aggression, especially among rejected people high in rejection sensitivity.These findings point to the importance of self-control in understanding why social rejection increases aggression, and how to prevent it. (149 words)

Social engineering is the illicit acquisition of information about computer systems by primarily non-technical means. Although the technical security of most critical systems is usually being regarded in penetration tests, such systems remain highly vulnerable to attacks from social engineers that exploit human behavioural patterns to obtain information (e.g., phishing). To achieve resilience against these attacks, we need to train people to teach them how these attacks work and how to detect them. We propose a serious game that helps players to understand how social engineering attackers work. The game can be played based on the real scenario in the company/department or based on a generic office scenario with personas that can be attacked. Our game trains people in realising social engineering attacks in an entertaining way, which shall cause a lasting learning effect.