Detecting and describing preventive intervention effects in a universal school-based randomized trial targeting delinquent and violent behavior.

Abstract

This study examined theoretical, methodological, and statistical problems involved in evaluating the outcome of aggression on the playground for a universal preventive intervention for conduct disorder. Moderately aggressive children were hypothesized most likely to benefit. Aggression was measured on the playground using observers blind to the group status of the children. Behavior was micro-coded in real time to minimize potential expectancy biases. The effectiveness of the intervention was strongly related to initial levels of aggressiveness. The most aggressive children improved the most. Models that incorporated corrections for low reliability (the ratio of variance due to true time-stable individual differences to total variance) and censoring (a floor effect in the rate data due to short periods of observation) obtained effect sizes 5 times larger than models without such corrections with respect to children who were initially 2 SDs above the mean on aggressiveness.

Cites (5)

1. Adolescence-limited and life-course-persistent antisocial behavior: a developmental taxonomy
   Moffitt, Terrie E. · 1993 · Psychological Review
2. Weighted kappa: nominal scale agreement provision for scaled disagreement or partial credit
   Cohen, Jacob · 1968 · Psychological Bulletin
3. Statistical Power Analysis for the Behavioral Sciences
   1977
4. Reducing Risks for Mental Disorders: Frontiers for Preventive Intervention Research
   1994
5. Observing Interaction: An Introduction to Sequential Analysis
   Bakeman, Roger, Gottman, John M. · 1997

Show all 5 references

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