Search PubMed⌕ Search

Biomedical subjects

David P Farrington

Publications and source records attributed to David P Farrington.

13 recordsLinked to original sources
PubMed2006

Why some generations are more violent than others: assessment of age, period, and cohort effects.

Empirical longitudinal studies assessing why community-level violence rates change over time are lacking. Despite a wide-ranging literature, questions remain as to whether changes over time are due to factors occurring in specific periods (period effects) or individuals in successive cohorts (cohort effect). The objective was to assess the relative contribution of age, period, and cohort effects on violence trends. The authors assessed differences in self-reported violence between two cohorts of males (n = 1,009) from the Pittsburgh Youth Study, which tracked delinquency and risk factors from 1987 to 2000. The youngest cohort were aged 7-19 years, and the oldest cohort were aged 13-25 years. Yearly measures of violence were examined through generalized estimating equations. The oldest cohort reported higher levels of violence even after adjustment for age and major individual-level risk factors (odds ratio (OR) = 1.45, 95% confidence interval (CI): 1.17, 1.81) such as gang participation and drug dealing, as well as community-level factors (OR = 2.16, 95% CI: 1.65, 2.82). However, when period effects were included, cohort differences were rendered insignificant (OR = 1.23, 95% CI: 0.78, 1.94). The authors conclude that differences in the rates of violence over time may be attributed to changing social factors (period effects) and not to differences between the individuals (cohort effect) of cohorts.

Adolescent↗
PubMed2005

Development and validation of the Basic Empathy Scale.

In developing the Basic Empathy Scale (BES), 40 items measuring affective and cognitive empathy were administered to 363 adolescents in Year 10 (aged about 15). Factor analysis reduced this to a 20-item scale that was administered 1 year later to 357 different adolescents in Year 10 in the same schools. Confirmatory factor analysis verified the two-factor solution. Females scored higher than males on both affective and cognitive empathy. Empathy was positively correlated with intelligence (for females only), extraversion (cognitive empathy only) neuroticism (affective empathy only), agreeableness, conscientiousness (for males only), and openness. Empathy was positively related to parental supervision and socioeconomic status. Adolescents who would help victims of bullying had high empathy.

Adolescent↗
PubMed2005

The importance of child and adolescent psychopathy.

In commenting on the five articles in this special issue, this paper discusses (1) the concept of child and adolescent psychopathy, and whether adolescent psychopaths are qualitatively distinct from other young people; (2) the measurement of adolescent psychopathy; (3) the relationship between psychopathy and other personality dimensions; (4) childhood risk factors for psychopathy; (5) psychopathy in the context of risk factors for delinquency; and (6) the prevention and treatment of adolescent psychopathy. It is argued that the three dimensions of an arrogant, deceitful interpersonal style, deficient affective experience, and an impulsive or irresponsible behavioral style are most important at present in the definition of psychopathy. An ambitious research agenda is recommended, investigating the concept of adolescent psychopathy, developing new measures, conducting new longitudinal studies on development and risk factors, and mounting new randomized experiments on prevention and treatment.

Adolescent↗
PubMed2005

The prediction of violence and homicide in young men.

In this prospective study, the authors predicted violence and homicide in 3 representative school samples (N = 1,517). Participants were part of a longitudinal, multiple cohort study on the development of delinquency in boys from late childhood to early adulthood in Pittsburgh, Pennsylvania. Thirty-three participants were convicted of homicide, 193 participants were convicted of serious violence, whereas another 498 participants self-reported serious violence. Predictors of violence included risk factors in the domains of child, family, school, and demographic characteristics. Boys with 4 or more violence risk factors were 6 times more likely to later commit violence in comparison with boys with fewer than 4 risk factors (odds ratio [OR] = 6.05). A subset of risk factors related to violence also predicted homicide among violent offenders. Boys with 4 or more risk factors for homicide were 14 times more likely to later commit homicide than violent individuals with fewer than 4 risk factors (OR = 14.48). Implications for the prevention of violence and homicide are discussed.

Adolescent↗
PubMed2005

Parental imprisonment: effects on boys' antisocial behaviour and delinquency through the life-course.

BACKGROUND: Prisoners' children appear to suffer profound psychosocial difficulties during their parents' imprisonment. However, no previous study has examined later-life outcomes for prisoners' children compared to children separated from parents for other reasons. We hypothesise that parental imprisonment predicts boys' antisocial and delinquent behaviour partly because of the trauma of separation, partly because parental imprisonment is a marker for parental criminality, and partly because of childhood risks associated with parental imprisonment. METHOD: This study uses prospective longitudinal data from the Cambridge Study in Delinquent Development (CSDD). The CSDD includes data on 411 Inner London males and their parents. We compare boys separated by parental imprisonment during their first 10 years of life with four control groups: boys who did not experience separation, boys separated by hospital or death, boys separated for other reasons (usually disharmony), and boys whose parents were only imprisoned before their birth. Individual, parenting, and family risk factors for delinquency were measured when boys were aged 8-11. Eleven antisocial and delinquent outcomes were assessed between ages 14 and 40. RESULTS: Separation because of parental imprisonment predicted all antisocial-delinquent outcomes compared to the four control conditions. Separation caused by parental imprisonment was also strongly associated with many other childhood risk factors for delinquency. After controlling for parental convictions and other childhood risk factors, separation caused by parental imprisonment still predicted several antisocial-delinquent outcomes, even up to age 32, compared with other types of separation. CONCLUSIONS: Prisoners' children are a highly vulnerable group with multiple risk factors for adverse outcomes. Parental imprisonment appears to affect children over and above separation experiences and associated risks. Further research on possible moderating and mediating factors such as stigma, reduction in family income and reduced quality of care is required to identify the mechanisms by which parental imprisonment affects children.

Adolescent↗
PubMed2004

Criminological psychology in the twenty-first century.

BACKGROUND: This article aims to review key issues that criminological psychologists should address in the twenty-first century, especially in relation to why people become offenders, why people commit offences, and the link between explanation and the prevention and reduction of offending. CONCLUSIONS: It is important to explain between-individual differences in the development of criminal potential and within-individual differences in the commission of crimes. More research is needed on protective factors, on investigating which risk factors are causes, and on causal mechanisms linking risk factors and offending. Questions about situational influences on offending should be included in longitudinal studies of the development of offenders. Comprehensive theories of offending need to be developed and tested. More longitudinal and experimental studies need to be carried out by criminological psychologists.

Crime↗
PubMed2004

Continuities in antisocial behavior and parenting across three generations.

BACKGROUND: Accumulating evidence indicates that there are intergenerational continuities in antisocial behavior, and that parenting patterns play a role in these continuities. Very few studies, however, enable assessment across two generations of children at comparable ages, employing independent reporters and comparable measurements. The present study addresses the extent to which antisocial behavior in parents predicts antisocial behavior in children in two successive generations; the degree to which a man's childhood antisocial behavior predicts antisocial behavior in his own children; the extent to which parenting problems are related to child antisocial behavior similarly in two successive generations; and the extent to which intergenerational continuities in antisocial behavior are mediated by parenting variables. METHODS: Questions are addressed with prospective longitudinal data from the Cambridge Study in Delinquent Development (CSDD). The CSDD includes data on 411 Inner London males (Generation 2, or G2), their female partners, their parents (G1) and their children (G3). At time 1, when G2 were aged 8-10, data on G2 child conduct problems and G1 parenting and convictions were available. At time 2 when G2 males were aged 32, data were available on the parenting of 178 G2 fathers with G3 children aged 3-15, and on their G3 children's behavior. Time 1 data come predominantly from G1 mothers, whereas time 2 data come predominantly from G2 fathers. RESULTS: Between generations, antisocial G1 mothers and fathers predicted conduct problems in G2 and G3 children, but G2 child conduct problems did not predict G3 child conduct problems. Within generations, G2 child conduct problems predicted G2 adult antisocial behavior and antisocial partnerships, which in turn predicted G3 conduct problems. Parental conflict and authoritarian parenting were similarly related to early childhood conduct problems in two successive generations. There was relatively little continuity between G1 and G2 parenting except that G2 males who were poorly supervised by their parents were themselves poor supervisors as fathers. Both G1 and G2 generations displayed assortative mating, with antisocial males tending to partner antisocial female peers. CONCLUSIONS: There are between-generation and within-generation continuities in antisocial behavior, although assessment of such continuities is complicated by inevitable design and measurement limitations. Parenting partly mediated the impact of parental antisocial behavior on child antisocial behavior in two successive generations, but the relation between antisocial parents and antisocial children is not fully mediated by parenting variables.

Adolescent↗
PubMed2003

Predictive, concurrent, prospective and retrospective validity of self-reported delinquency.

BACKGROUND: The self-report method is widely used to measure offending. Previous studies suggest that it is generally valid, but that its validity may be lower for blacks than for whites. AIM To assess the validity of self-reported offending in relation to court referrals, and to investigate how it varies with types of offences, sex and race. METHOD: Annual court and self-report data were collected between ages 11 and 17 for eight offences in the Seattle Social Development Project, which is a prospective longitudinal survey of 808 youths. RESULTS: Self-reports predicted future court referrals. Predictive validity was highest for drug offences, for males and for whites, and lowest for females and Asians. The probability of youths with a court referral reporting offences and arrests was highest for drug offences, for males, for whites and for blacks. Retrospective ages of onset agreed best with prospective ages for drug offences, Asians and whites. More Asians than blacks or whites failed retrospectively to report offences that had been reported prospectively. CONCLUSIONS: The validity of self-reports of offending was high, especially for drug offences, for males and for whites. Contrary to prior research, validity was high for black males. It was lowest for Asian females. Sex and race differences in validity held up after controlling for socioeconomic status. Differential validity probability did not reflect police bias.

Adolescent↗
PubMed2003

A short history of randomized experiments in criminology. A meager feast.

This article discusses advantages of randomized experiments and key issues raised in the following articles. The main concern is the growth and decrease in the use of randomized experiments by the California Youth Authority, the U.S. National Institute of Justice, and the British Home Office, although other experiments are also discussed. It is concluded that feast and famine periods are influenced by key individuals. It is recommended that policy makers, practitioners, funders, the mass media, and the general public need better education in research quality so that they can tell the difference between good and poor evaluation studies. They might then demand better evaluations using randomized experiments.

Criminology↗
PubMed2002

Are within-individual causes of delinquency the same as between-individual causes?

BACKGROUND: Previous studies of the causes of delinquency have been based on between-individual correlations. This paper aims to study the causes of delinquency by comparing within-individual and between-individual correlations of risk factors with delinquency. METHOD: A total of 506 boys in the oldest sample of the Pittsburgh Youth Study were followed up in seven data waves between ages 13.8 and 17.8 on average. RESULTS: Poor parental supervision, low parental reinforcement and low involvement of the boy in family activities were the most important causes of delinquency according to forward-lagged within-individual correlations. Poor housing was positively related to delinquency for boys living in bad neighbourhoods but not for boys living in good neighbourhoods. CONCLUSIONS: Forward-lagged within-individual correlations provide more valid information about the causes of delinquency than do between-individual correlations. Peer delinquency was the strongest correlate of delinquency according to between-individual correlations but was not a cause of delinquency according to forward-lagged within-individual correlations.

Adolescent↗
PubMed2002

Risk and promotive effects in the explanation of persistent serious delinquency in boys.

Risk and promotive effects were investigated as predictors of persistent serious delinquency in male participants of the Pittsburgh Youth Study (R. Loeber, D. P. Farrington, M. Stouthamer-Loeber, & W. B. van Kammen, 1998), living in different neighborhoods. Participants were studied over ages 13-19 years for the oldest sample and 7-13 years for the youngest sample. Risk and promotive effects were studied in 6 domains: child behavior, child attitudes, school and leisure activities, peer behaviors, family functioning, and demographics. Regression models improved when promotive effects were included with risk effects in predicting persistent serious delinquency. Disadvantaged neighborhoods, compared with better neighborhoods, had a higher prevalence of risk effects and a lower prevalence of promotive effects. However, predictive relations between risk and promotive effects and persistent serious delinquency were linear and similar across neighborhood socioeconomic status.

Adolescent↗