A Large-Scale Replication of the Effectiveness of the KiVa Antibullying Program: a Randomized Controlled Trial in the Netherlands.

This study evaluates the effectiveness of the KiVa antibullying program in the Netherlands through a randomized controlled trial of students in grades 3-4 (Dutch grades 5-6). The sample involved 98 schools who volunteered to participate in the research, with 245 classes and 4383 students at the baseline (49% girls; M age = 8.7 years), who participated in five measurement waves, collected in three consecutive school years.

A description of classroom help networks, individual network position, and their associations with academic achievement.

This study examined how classroom peer relations can be described in terms of the network of help relations among students, and the positions students take up in this help network, and whether the structure of adolescent classroom help networks and individual network positions were associated with academic achievement. Help networks were based on the peer nomination question "Who helps you with problems?" Building on previous studies on classroom climate and individual network position, higher academic achievement was expected in classrooms with: a dense help network; no or a few network isolates (referring to students that did not give or receive help at all); less segmentation in help relations; equally distributed help nominations. In addition, higher achievement was expected for individuals with more helpers and a more central position in the help network.

Defending one's friends, not one's enemies: A social network analysis of children's defending, friendship, and dislike relationships using XPNet.

Previous studies investigating to what extent students in elementary schools defend their victimized classmates typically treated defending as an individual characteristic. Defending should, however, be seen as a directed dyadic relationship between a victim and a defender, who are embedded multiple positive and negative relationships with each other and their classmates. Accordingly, in the present study defending was investigated using social network analysis.

Peer and self-reported victimization: Do non-victimized students give victimization nominations to classmates who are self-reported victims?

Using data from 2413 Dutch first-year secondary school students (M age=13.27, SD age=0.51, 49.

Teacher characteristics and peer victimization in elementary schools: a classroom-level perspective.

The purpose of this study was to investigate whether there is an association between teacher characteristics and peer victimization in elementary schools. We used data of 3,385 elementary school students (M age = 9.8) and 139 of their teachers (M age = 43.