The investigators will examine whether perceived social exclusion provoke a reduction in prosocial behavior, such as empathy, in BPD patients and whether this fight-or-flight pattern is also seen in other relevant aspects of social behavior, such as sharing and punishment behavior. To induce social exclusion all participants will play cyberball, either the exclusion condition or the (over)inclusion condition before testing
The investigators will examine whether perceived social exclusion provoke a reduction in prosocial behavior in BPD patients.