RT Research Data T1 Systematic Review of School-Based Programs to Reduce Bullying and Victimization, 1983-2009 A1 Farrington, David P. A2 Ttofi, Maria M. LA English PP Erscheinungsort nicht ermittelbar PB [Verlag nicht ermittelbar] YR 2014 UL https://krimdok.uni-tuebingen.de/Record/1840047739 AB The purpose of this systematic review was to assess the effectiveness of school-based anti-bullying programs in reducing school bullying. The following criteria were used for the inclusion of studies in the systematic review: the study described an evaluation of a program designed specifically to reduce school (kindergarten to high school) bullying; bullying was defined as including: physical, verbal, or psychological attack or intimidation that is intended to cause fear, distress, or harm to the victim; and an imbalance of power, with the more powerful child (or children) oppressing less powerful ones; bullying (specifically) was measured using self-report questionnaires, peer ratings, teacher ratings, or observational data; the effectiveness of the program was measured by comparing students who received it (the experimental condition) with a comparison group of students who did not receive it (the control condition). There must have been some control of extraneous variables in the evaluation by (1) randomization, or (2) pre-test measures of bulling, or (3) choosing some kind of comparable control condition; published and unpublished reports of research conducted in developed countries between 1983 and 2009 were included; and it was possible to measure the effect size. Several search strategies were used to identify 89 anti-bully studies meeting the criteria for inclusion in this review: researchers searched for the names of established researchers in the area of bullying prevention; researchers conducted a keyword search of 18 electronic databases; researchers conducted a manual search of 35 journals, either online or in print, from 1983 until the end of May 2009; and researchers sought information from key researchers on bullying and from international colleagues in the Campbell Collaboration. Studies included in the review were coded for the following key features: research design, sample size, publication date, location of the study, average age of the children, and the duration and intensity of the anti-bullying program for both the children and the teachers. K1 Bullying K1 crime in schools K1 educational environment K1 Evaluation K1 Intervention K1 Juvenile Offenders K1 juvenile victims K1 Juveniles K1 Program Evaluation K1 Programs K1 school age children K1 Schools K1 Victimization K1 Forschungsdaten DO 10.3886/ICPSR31703.v1