Effectiveness of school-based programs to reduce bullying: a systematic and meta-analytic review

This article presents a systematic review and meta-analysis of the effectiveness of anti-bullying programs in schools. Studies were included if they evaluated the effects of an anti-bullying program by comparing an intervention group who received the program with a control group who did not. Four types of research design were included: a) randomized experiments, b) intervention-control comparisons with before-and-after measures of bullying, c) other intervention-control comparisons, and d) age-cohort designs. Both published and unpublished reports were included. All volumes of 35 journals from 1983 up to the end of May 2009 were hand-searched, as were 18 electronic databases. Reports in languages other than English were also included. A total of 622 reports concerned with bullying prevention were found, and 89 of these reports (describing 53 different program evaluations) were included in our review. Of the 53 different program evaluations, 44 provided data that permitted the calculation of an effect size for bullying or victimization. The meta-analysis of these 44 evaluations showed that, overall, school-based anti-bullying programs are effective: on average, bullying decreased by 20–23% and victimization decreased by 17–20%. Program elements and intervention components that were associated with a decrease in bullying and victimization were identified, based on feedback from researchers about the coding of 40 out of 44 programs. More intensive programs were more effective, as were programs including parent meetings, firm disciplinary methods, and improved playground supervision. Work with peers was associated with an increase in victimization. It is concluded that the time is ripe to mount a new program of research on the effectiveness of anti-bullying programs based on these findings.     

Patriarchal ideology and wife-assault: A meta-analytic review

Using the framework of patriarchal theory, the present meta-analytic review examined the predicted relation between wife assault and the maintenance of a patriarchal ideology. This relationship was evaluated using three measures of patriarchal ideology: (1) attitudes toward violence, (2) gender attitudes, and (3) gender schemas. Overall, assaultive husbands reported more positive attitudes toward marital violence and lower scores on masculine and feminine gender schema scales than nonassaultive husbands. Methodological factors accounted for the significant heterogeneity among the gender attitude effect estimates for men. A nonsignificant average effect in the males' gender attitude emerged in studies which used husbands' self-report data and case-control comparison groups. In contrast to men, assaulted wives held more feminine gender schema and tended to exhibit more liberal gender attitudes than nonassaulted wives across studies. These meta-analytic findings offer limited support for the ideological component of the patriarchal theory of wife assault and are discussed with respect to their theoretical and methodological implications.     

Personality, antisocial behavior, and aggression: A meta-analytic review

Purpose

Although the relationship between personality and antisocial behaviors has been widely examined and empirically supported in the psychological literature, relatively few efforts to study this relationship have appeared in mainstream criminology.

Materials and methods

The current study focuses on the domains and facets from the Five-Factor Model of personality, and how they are related to antisocial and aggressive behaviors.

Results

The meta-analytic findings indicate that the higher-order traits of Agreeableness, Conscientiousness, and Neuroticism demonstrate the most consistent relationships with these outcomes. At the lower-order trait level, straightforwardness, compliance, and altruism from Agreeableness, deliberation from Conscientiousness, angry hostility from Neuroticism, and warmth from Extraversion were among the strongest correlates.

Conclusion

The findings are consistent with previous meta-analytic studies, thus providing compelling support for their utility in understanding antisocial and aggressive behavior. As such, they should be afforded greater theoretical and empirical attention within criminology.     

A meta-analysis update on the effectiveness of early self-control improvement programs to improve self-control and reduce delinquency

Objective

To update Piquero et al.’s (Justice Quarterly 27:803–834, 2010) meta-analysis on early self-control improvement programs.

Methods

Screening of eligible studies was carried out for the period between January 2010 and September 2015. An additional seven studies were identified, which were added to the original database of 34 studies, totaling an overall sample of 41 eligible studies. A random effects model was used to obtain an overall mean effect size estimate. Additional analyses were performed to assess publication bias and moderation.

Results

Overall average, positive, and significant effect sizes were observed for improving self-control (0.32) and reducing delinquency (0.27). There was evidence of publication bias for the self-control improvement outcomes, as well as some evidence of moderation for both self-control improvement and delinquency outcomes.

Conclusions

Early self-control improvement programs are an effective evidence-based strategy for improving self-control and reducing delinquency.

     

The predictive validity of youth violence risk assessment tools: a systematic review

ABSTRACT

This paper reports the findings of a systematic search of published literature which reports the predictive validity of violence risk assessment tools specifically designed for use with youth. A total of 38 studies, involving 9,307 participants, reported data for six different tools; the most common of which were the SAVRY and the YLS/CMI. Each of the tools demonstrated at least moderate levels of predictive validity, with the predictive validity of several newer assessment tools yet to be established. The results provide an up-to-date overview of the state of knowledge in an area in which practitioners make choices about which tools to use on an almost daily basis. It is important that practitioners are aware of the strength of evidence that is available to support the choice of violence risk assessment tools and the interpretation of results.     

The impact of family indifference on delinquency among American Indian youth: A test of general strain theory

Native American (NA) youth's delinquency is one of the major problems that have been overlooked by criminal justice researchers and practitioners. To examine if negative family environment influences their delinquency with the mediating effect of negative emotion, this study analyzed structural equation modeling based on the General Strain Theory (GST). Using data regarding NA adolescents, this study found much evidence supporting GST. The results of the model with anger showed that anger was a mediating variable between family indifferences and delinquency, and the model with depression indicated that family indifferences increased delinquency through depression. However, some results in the model with anger and depression were not in accordance with GST hypothesis.     

A meta-analysis update on the effects of early family/parent training programs on antisocial behavior and delinquency

Objective

To update Piquero et al.’s meta-analysis on early family/parent training programs.

Methods

Screening of eligible studies was carried out for the period between January 2008 and August 2015. An additional 23 studies were identified, which were added to the original database of 55 studies, totaling an overall sample of 78 eligible studies. A random-effects model was used to obtain an overall mean effect size estimate. Additional analyses were performed to assess publication bias and moderation.

Results

An overall average, positive, and significant effect size of 0.37 was calculated, which corresponds to 32 out of 100 in a treated group versus 50 out of 100 in a control group who offended. There was some evidence of publication bias and moderation.

Conclusions

Early family/parent training programs are an effective evidence-based strategy for preventing antisocial behavior and delinquency.

     

Parental efficacy, self-control, and delinquency: A test of a general theory of crime on a nationally representative sample of youth

Criminologists have recently begun examining Gottfredson and Hirschi's (1990) proposition that parenting is the primary influence on children's levels of self-control. The few existing studies on the subject, however, have typically been based on small, nonrandom samples. The current study examines the relationships between parental efficacy, self-control, and delinquent behavior using data from a nationally representative sample of adolescents (the National Longitudinal Study of Adolescent Health). The results indicate that although parental efficacy is an important precursor to self-control, contrary to Gottfredson and Hirschi's proposition, self-control does not completely mediate the relationship between parental efficacy and delinquency. The implications for future research and theoretical development are discussed.     

Assessing the effectiveness of drug courts on recidivism: A meta-analytic review of traditional and non-traditional drug courts

Purpose

The objective of this research was to systematically review quasi-experimental and experimental evaluations of the effectiveness of drug courts in reducing offending.

Methods

Our search identified 154 independent evaluations: 92 evaluations of adult drug courts, 34 of juvenile drug courts, and 28 of DWI drug courts. The findings of these studies were synthesized using meta-analysis.

Results

The vast majority of adult drug court evaluations, even the most rigorous evaluations, find that participants have lower recidivism than non-participants. The average effect of participation is analogous to a drop in recidivism from 50% to 38%; and, these effects last up to three years. Evaluations of DWI drug courts find effects similar in magnitude to those of adult drug courts, but the most rigorous evaluations do not uniformly find reductions in recidivism. Juvenile drug courts have substantially smaller effects on recidivism. Larger reductions in recidivism were found in adult drug courts that had high graduation rates, and those that accepted only non-violent offenders.

Conclusions

These findings support the effectiveness of adult drug courts in reducing recidivism. The evidence assessing DWI courts' effectiveness is very promising but more experimental evaluations are needed. Juvenile drug courts typically produce small reductions in recidivism.     

Incidents of discrimination and risk for delinquency: A longitudinal test of strain theory with an African American sample

This article examines the relationship between racial discrimination and delinquency. Using longitudinal data collected on approximately 700 African American children, we begin by establishing an association between exposure to discrimination and delinquent behavior. Next, we use structural equation modeling to test various hypotheses regarding the emotional and cognitive factors that mediate this association. For boys, the association between discrimination and delinquency is mediated by feelings of anger and depression and by the belief that aggression is a necessary interpersonal tactic. The results are somewhat different for girls. Although anger and depression mediate part of the effect of discrimination on delinquency, discrimination continues to display a small but significant direct effect. The implications of these findings for criminological theory are discussed.     

IQ and delinquency: A test of two competing explanations

In the past, sociologists either dismissed or ignored the well-established empirical relationship between IQ and juvenile delinquency. More recently, however, they have come to accept the IQ/JD connection but now debate the most valid explanation for it. Some have advanced what we characterized as a school performance model, while others adhere to what may be called a school reaction model. The major bone of contention between the competing models is over the school variables thought to mediate the IQ/JD relationship. In this study, we specified the most dominant versions of the competing models as well as a model integrating the concepts of each. Using three waves of data from the Youth in Transition project, we first estimated parameters for each of the competing models and then parameters for the integrated model. Considered independently, each model was supported by the data. However, when each of the separate models was forced to take into account the explanatory contribution of its competitor, only the school performance model was supported. Implications of the findings for schooling and delinquency are discussed.     

Changing contexts: A quasi-experiment examining adolescent delinquency and the transition to high school

In a quasi-experiment, we examine whether changing schools during the transition from 8th to 9th grade influences adolescent delinquency, using a sample of more than 14,000 students in 26 public school districts (PROSPER study). The dataset follows students for eight waves from 6th through 12th grade and facilitates a unique, direct comparison of students who change schools with those who remain in the same school during this period. Results show that students who transition between schools report significantly less delinquency after the shift than those who do not, and that this difference persists through 10th grade. This decline is most pronounced when adolescents from multiple middle schools move to a single high school (i.e., multifeeder transitions). Students who transition between schools have fewer delinquent friends and participate in less unstructured socializing following the change in school environment, which partially mediates their reduced delinquency. Results provide some support for theories of differential association and routine activities. Our findings highlight the role of a crucial, yet understudied, life transition in shaping adolescent delinquency. The results from this quasi-experiment underscore the potential of alterations in social context to significantly dampen juvenile delinquency throughout high school.     

Perceived injustice and delinquency: A test of general strain theory

Purpose

While a growing body of empirical literature supports many key predictions of General Strain Theory (GST), the subjective perception of injustice remains a theoretically important but empirically under-researched type of strain. The present study therefore examines the relations among perceived injustice, anger, and rule-violation.

Methods

Using a sample of middle- and high-school students from 12 schools in Southern New Hampshire, the present study tests GST via a series of OLS, negative binomial, and structural equation analyses using a more precise measure of perceived injustice than prior work and extensive statistical controls for such variables as self-control, differential association, attitudes toward delinquency, and alternative strain measures in a longitudinal context.

Results

Results yield strong support for the notions that perceived injustice promotes delinquency and that this relationship is mediated by situational anger.

Conclusions

Perceived injustice appears to be an important type of strain that should be incorporated into future research and addressed by future delinquency prevention efforts.     

Predicting juvenile delinquency: A review of correlates and a confirmation by recent research based on an integrated theoretical model

This study is an exploration of the effects of setting cases for trial in a court that permits jury trials for juveniles. Although few cases actually go to trial, cases set for trial have an impact on juveniles and the court. The study reported here is based on data from a study of 710 youths upon whom delinquency petitions were filed in a suburban court in 1980. Of these youths, 94 had cases set for trial and 7 actually went to trial.

The first part of the article gives a brief historical perspective on the juvenile right to jury trial, discusses why defense attorneys set cases to trial, and describes some of the difficulties in measuring the impact of jury trials. The second part reports on the impact of trial setting in “Suburban Court” on case outcomes and case processing time. A partial correlation analysis shows that there is no significant association between setting a case for trial and either adjudication or final disposition, even when other factors are held constant. Setting a case for trial has a significant association with long case processing times, however. Cases set for trial take almost twice as long as other cases to move from filing to adjudication.     

A meta-analytic review of the frequency and patterning of laryngohyoid and cervical fractures in cases of suicide by hanging

The frequency and distribution of fractures are commonly utilized to assist in interpreting the manner of death. In cases of alleged suicide by hanging, however, the evidence base for the frequency and patterning of laryngohyoid and cervical vertebrae fractures resulting from such blunt force traumatic events is limited and so fractures cannot be reliably used to assist in interpreting the manner. Using meta-analytic techniques, this study aimed to estimate frequency and distribution of fractures in the context of relevant intrinsic and extrinsic variables. A systematic review of the literature identified 20 studies with relevant data (8523 cases of suicide by hanging). Meta-analyses identified the frequency and distribution of fractures present and how fracture frequency was affected by the subgroups of age, sex, completeness of suspension, ligature knot position and study design. Results indicated that fracture frequency was variable, there was no unique patterning, and high levels of heterogeneity were present in all variable sub-groups. Age was the only subgroup to show differences. Findings suggest that neck fracture frequency is inconsistent and cannot be predicted by the chosen variables. Subsequently, neck fractures in isolation should not be given weight in medico-legal interpretations of a hanging death as suicidal.