Much of developmental and life course criminological research addresses either the onset and escalation of antisocial behavior in childhood and adolescence, or the desistance from crime during the adult years. Far less attention has been paid to the years in which adolescents first make the transition to adulthood. Over the last 50 years due to increased educational demands this transition period has become prolonged and increasingly deinstitutionalized, resulting in a new life stage denoted as the emerging adult period. This introductory paper describes the ways in which this newly formed life stage between ages 18 and 28 is relevant for criminology, questions our knowledge on criminal career development during this period and explores new research avenues that may contribute to a full-fledged criminology of the emerging adulthood.

Research demonstrates moderate detrimental effects of lead and human health. Interesting from a criminological point of view is the association between lead and delinquent, criminal and aggressive behaviour. In this paper the possible causality of this association will be discussed.