No evidence of a curvilinear relation between conscientiousness and relationship, work, and health outcomes.

Across 2 studies and 4 samples (Ns = 8,332, 2,136, 4,963, and 753, respectively), we tested whether the relation between conscientiousness and variables associated with important aspects of individuals' lives were curvilinear such that being high on conscientiousness was manifestly negative. Across multiple outcomes including measures of health, well-being, relationship satisfaction, job satisfaction, and organizational citizenship, we found no...