Construct validity and reliability of Olweus Bully/Victim Questionnaire – Brazilian version
AUTOR(ES)
Gonçalves, Francine Guimarães, Heldt, Elizeth, Peixoto, Bianca Nascimento, Rodrigues, Gabriela Adamatti, Filipetto, Marcelly, Guimarães, Luciano Santos Pinto
FONTE
Psicol. Reflex. Crit.
DATA DE PUBLICAÇÃO
20/06/2016
RESUMO
Abstract The Revised Olweus Bully/Victim Questionnaire (OBVQ) is among the few bullying assessment instruments with well-established psychometric properties in different countries. Nevertheless, the psychometric properties of the Brazilian version (Questionário de Bullying de Olweus - QBO) have not been determined. We aimed at verifying the construct validity and reliability of the bully and victim scales of the QBO. To achieve that goal, the victim and bully scales were assessed using polytomous item response theory (IRT). The best fit was obtained with a generalized partial credit model that is capable of measuring the specific discriminating power for each item in these scales. The QBO was administered to 703 public school students (mean age: 13 years; standard deviation = 1.58). Based on IRT analysis, the number of response categories in each item was reduced from four to three. Cronbach reliability scores were satisfactory: α = 0.85 (victim scale) and α = 0.87 (bully scale). In this study, hurtful comments, persecution, or threats had high power to discriminate victims and bullies. For both QBO scales, higher severity parameters were observed for direct bullying items. The results also show that the construct of both QBO scales measures the same construct proposed for the overall instrument. Thus, the QBO can be administered to different Brazilian populations to assess the main characteristics of bullying: repetition of behavior over time and intentionally acting to humiliate, threaten, or harm somebody.
Documentos Relacionados
- The Brazilian Portuguese-language version of the Manchester Respiratory Activities of Daily Living questionnaire: construct validity, reliability, and measurement error
- Brazilian version of the Cognitive Failures Questionnaire (CFQ): cross-cultural adaptation and evidence of validity and reliability
- Reliability and Validity of a Chinese Version of Urinary Tract Infection Symptom Assessment Questionnaire
- Validity evidence of a Brazilian version of the Moral Foundations Questionnaire
- Reliability and validity of the Brazilian version of the HSOPSC: a reassessment study