Cluster a personality symptomatology in youth

There is an increasing recognition of the importance of studying the childhood antecedents of adult personality disorders as well as personality disorders themselves within childhood and adolescence. This has been a long neglected area of research. The two papers within this special issue of Journal of Psychopathology and Behavioral Assessment by Esterberg et al. (2010) and De Clercq et al. (2010) make significant strides toward addressing this delinquent focus of investigation. This commentary addresses three issues stimulated by these two particular studies: the distinction between personality and other mental disorders, dimensional models of classification, and openness to experience.