We are interested in the dynamic interplay of personality and social relationships.

Using a multimethodological approach to the measurement of individual differences (self- and peer reports, behavioral measures, indirect tests) and social interactions (laboratory tasks, experience sampling, online diaries, computer-mediated communication), we investigate how personality affects the initiation and maintenance of social relationships and how, in turn, social relationships feed back into the development of social identities.

Latest projects cover topics such as personality self-knowledge and self-enhancement, the indirect assessment of personality and attraction, the assessment of narcissism and the popularity of narcissists, the accuracy of interpersonal judgments, personality and speed-dating, personality and the development of friendships, behavioral, affective, and cognitive state variability, as well as the development of personality and self-esteem in social context.