Browsing by Autor "William M. Bukowski"

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    Adjusting for Group Size Effects in Peer Nomination Data
    (Wiley, 2013) Ana María Velásquez; William M. Bukowski; Lina María Saldarriaga
    Abstract Adjusting nomination‐based sociometric and peer assessment scores for biases due to variations in group size has been a long‐standing concern for peer relations researchers. The techniques that have been typically used to make these adjustments (e.g., proportion and standardized scores) are known to have fundamental problems that limit their utility. This study introduces a regression‐based procedure that adjusts nomination‐based scores for variations in group size and compares it with the standardization and proportion procedures. Analyses were conducted on sociometric and peer assessment scores of 1594 fourth, fifth, and sixth graders from 63 classrooms. The advantages of the regression‐based procedure over standardization and proportion transformations are outlined. Implications for the accuracy and validity of nomination‐based measures and the research findings based on them are discussed.
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    THE MODERATING EFFECTS OF SOCIAL PROBLEM-SOLVING IN THE RELATIONSHIP BETWEEN RISK FACTORS AND PEER VICTIMIZATION IN COLOMBIAN EARLY ADOLESCENTS/ EFECTOS MODERADORES DE LA HABILIDAD DE SOLUCIÓN DE PROBLEMAS SOCIALES EN LA RELACIÓN ENTRE FACTORES ...
    (LA Referencia, 2012) Lina María Saldarriaga; William M. Bukowski; Ana María Velásquez
    This study assessed the moderating effect of social problem-solving (SPS) in the association between risk factors and peer victimization in a sample of Colombian adolescents. Using structural equation modeling techniques, this study assessed the extent to which changes in victimization varied as a function of the interaction between risk factors and social problem-solving. Results showed that both aggression and avoidance were predictive of initial scores on victimization, but only avoidance was found to predict its change over time. Only a main effect of SPS was found at the beginning of the year; no moderating effects were found. Results are consistent with previous findings by confirming that avoidance and aggression are risk factors for peer victimization.