Weapon carrying and psychopathic-like features in a population-based sample of Finnish adolescents.

We investigated the prevalence of juvenile weapon carrying and psychosocial and personality-related risk factors for carrying different types of weapons in a nationally representative, population-based sample of Finnish adolescents. Specifically, we aimed to investigate psychopathic-like personality features as a risk factor for weapon carrying. The participants were 15-16-year-old adolescents from the Finnish self-report delinquency study (n = 4855).

Are qualitative and quantitative sleep problems associated with delinquency when controlling for psychopathic features and parental supervision?

The aim of this study was to explore the relationship between sleep, including both qualitative and quantitative aspects, and delinquent behaviour while controlling for psychopathic features of adolescents and parental supervision at bedtime. We analysed data from a nationally representative sample of 4855 Finnish adolescents (mean age 15.3 years, 51% females).

Childhood family background and mortality differences by income in adulthood: fixed-effects analysis of Finnish siblings.

Background: Events and conditions during childhood have been found to affect health and mortality at later stages in life. We studied whether childhood conditions explain the observed all-cause and cause-specific mortality disparity between income groups in adulthood.

Methods: We used a 10% register linked sample of Finnish households in the 1950 census identifying 51 647 children aged 0-14 with at least one sibling of the same sex and followed them for mortality from the age 35 until ages 57-72.

To tell or not to tell? Psychopathic traits and response integrity in youth delinquency surveys.

Background: Individuals with high psychopathy scores are capable of providing valid self-reports on their own personality traits, but there have been no empirical studies of the effect of psychopathic features on responding to sensitive survey questions about specific behaviours.

Aims: The aim of this study is to investigate any relationship between facets of psychopathy and participants' willingness to report antisocial acts in youth delinquency surveys, controlling for demographic variables known to be associated with response integrity.

Methods: In a nationally representative sample of 4,855 Finnish mainstream adolescents aged 15-16, honesty of responding was assessed through direct response integrity questions related to violence, property crime and drug use.

Material deprivation or minimal education? Social class and crime in an egalitarian welfare state.

Research on social class and crime is dominated by perspectives that assume socioeconomic disadvantage to exert causal influence on offending. As an alternative approach, the present study examined hypotheses derived from a social selection perspective which treats intergenerational continuity in antisocial propensity as the primary source of socioeconomic differences in criminal activity. Under this theory, individual characteristics of the parents influence their personal socioeconomic attainment as well as the behavioral traits they pass on to their children.