A multidisciplinary theory is offered to explain his criminal behavior. This theory starts from the assumption that in the case of the chronic juvenile delinquent we are dealing with a failing socialization process. Factors influencing the outcome of this socialization process are discussed and analyzed from a developmental perspective. Working hypotheses are presented to help understand why some developments may lead to behavioral problems such as criminal activities, while in other cases internalization of problems can be observed. This article is an attempt at integration of existing theories concerning the persistent juvenile offender. 2 figures, 24 references. (Author abstract)