Prosociality in personality disorders: Status quo and research agenda

Maladaptive personality traits as predictors of prosocial and trusting behavior in two economic games

BACKGROUND

Dimensional models of personality disorders postulate interpersonal dysfunction as the core feature of personality pathology, and describe maladaptive personality traits that characterize the specific pattern of dysfunction that is experienced. Herein, we examined whether maladaptive traits predict prosocial and trusting behavior, both of which are highly relevant behaviors for interpersonal functioning. Specifically, we examined antagonism as a predictor of prosocial behavior in a dictator game, and suspiciousness as a predictor of trust in the faith game.

MATERIALS AND METHODS

The study was preregistered and conducted online. The preregistration protocol is available at https://osf.io/er43j . Data and code are available at https://osf.io/2rvbg/ . Participants (N = 445) completed the German version of the Personality Inventory for DSM-5 to measure antagonism and suspiciousness. Additionally, they played the dictator game (more money taken away from another person indicates less prosocial behavior) and the faith game (choosing the sure choice instead of the faith choice indicates less trust). We conducted a linear regression model to test whether antagonism is associated with prosocial behavior in the dictator game and a logistic regression model to test whether suspiciousness predicts selection of the sure choice in the faith game.

RESULTS

As hypothesized, higher levels of antagonism were associated with less prosocial behavior in the dictator game. The remaining hypotheses were not supported, as suspiciousness was not significantly associated with the likelihood of choosing the sure choice in the faith game. Exploratory analyses on participants' estimates of the sure choice amount suggest successful experimental manipulation in the faith game.

CONCLUSIONS

The results on antagonism and prosocial behavior are consistent with those of previous studies that used categorial classification systems of personality disorders or examined non-pathological personality traits. Potential explanations for the non-significant effects of suspiciousness are discussed, including the small size and range of the sure choice payoff and that the anonymity of the game may have precluded suspicious traits from expressing. Future research with higher stakes and known interaction partners is needed to further probe the effects of suspiciousness.

"Self" and "other": A conceptual bridge linking normal with pathological personality

The goal of this paper is to try and close the gap between the ways in which pathological and normal personality, including their development, are conceptualized. To this end, attention is drawn to parallels that exist between the ways self-function is conceptualized in contemporary personality psychology and in recent iterations of the major psychiatric nosologies, particularly ICD-11. Conceptualizations in both normal and abnormal personality see a fundamental dichotomy between self as identity and self as socially interdependent (vs autonomous). Evidence is reviewed supporting a basic dichotomy between two categories of personality pathology that can be subsumed under the labels "Acting Out" and "Anxious-Inhibited." It is suggested that fundamental to the personality pathology subsumed under "Acting Out" is a deficient interdependent self, while a defective self-identity is proposed to underlie the personality pathology subsumed under "Anxious-Inhibited."