Internal Consistency and Dimensionality in the Brief Questionnaire for Bullying Detection

Abstract

Objective.
To corroborate the psychometric performance, internal consistency and dimensionality, of the Brief
Questionnaire for Bullying Detection (BQBD).
Method.
A validation study was designed in which 350 students
between 10 and 17 years of age (
M
= 13.3;
SD
= 1.8) participated, 53.7% of them female. Internal consistency
indicators (Kuder-Richardson, K-R and McDonald’s omega) were calculated for the three sub-scales of the
BQBD.
Results.
The sub-scale of perceived intimidation showed K-R of 0.55 and McDonald’s omega of 0.58;
the sub-scale of emotional symptoms were 0.80 and 0.81, and the sub-scale of perpetrated intimidation
were 0.41 and 0.33, respectively. It was impossible to demonstrate the proposed dimensionality.
Conclusion.
Only the sub-scale of emotional symptoms of the BQBD has high internal consistency. More research on the
dimensionality of the BQBD is needed to explain its internal structure.