Categorizing pupils' written answers to a mathematics test question: 'I know but I can't explain'

In the literature on school bullying, it is often stated that there is an age decline in the frequency of students victimized by their peers. The empirical studies showing this downward trend are, however, typically based on self-report data. The aim of the present study was to examine the grade-level differences in frequencies of victims bullied at school in cross-sectional data gathered from multiple informants: students themselves, their peers and their teachers. The participantswere 1,220 elementary school children (600 girls and 620 boys) from 48 school classes from the fourth, fifth and sixth grades (i.e. 9-12 years). The often reported age-related decrease in self-reported victimization was found but it was not confirmed by either peer or teacher reports. What actually decreased as a function of age was the frequency of self-identified victims (also labelled as 'paranoids' or 'sensitives' in the previous literature), i.e. students who themselves reported victimization but who did not have the reputational status of being victims among their peers.