Fig. 1From: Construct validity and reliability of Olweus Bully/Victim Questionnaire – Brazilian versionItem characteristic curves for item 1 of the bully and victim scales of the Brazilian Portuguese version of the Olweus Bully/Victim Questionnaire (QBO)a. aCurves with four (a) and three (b) response categories, after standardization and transformation (c)Back to article page