The Cognitive Behavioural Processes Questionnaire: A Preliminary Analysis within Student, Mixed Clinical and Community Samples and the Identification of a Core Transdiagnostic Process

Theorists have highlighted the commonalities in cognitive and behavioural processes
across multiple disorders i.e. transdiagnostic approach. We report two studies that
tested the psychometric properties of a new scale to assess these processes. The
Cognitive and Behavioural Processes Questionnaire (CBP-Q) was developed as a 15-
item measure. In Study 1, the CBP-Q was administered to a student (n = 172) sample
with a range of standardised measures of the processes and symptom measures. Study 2
repeated the evaluation in a mixed clinical group (n = 161) and a community control
group (n = 57). An exploratory factor analysis resulted in a 12-item version of the CBPQ,
consisting of a single factor. The measure demonstrated good internal consistency,
test-retest stability and satisfactory convergent and divergent validity in both studies.
Correlations with symptom-based measures showed increased engagement in these
cognitive and behavioural processes to be associated with higher levels of
symptomatology. The scale was elevated in the clinical relative to the community group
and there were no differences in scores between broad diagnostic groupings (anxiety vs.
mood vs. other).
The CBP-Q has good psychometric properties. The findings are consistent with the
transdiagnostic approach and indicate that a single, as yet unspecified factor may
account for the shared variance across cognitive and behavioural maintenance
processes.