Development and validation of a new Theory of Planned Behaviour questionnaire for mental health service use behaviours


  1. Fikretoglu, D.
  2. Lam, Q.
  3. Blais, A.
Corporate Authors
Defence Research and Development Canada, Toronto Research Centre , Toronto ON (CAN)
Introduction: Many existing workplace mental health interventions fail to spell out whether any theoretical models guided the identification of intervention targets, and relatedly, do not explain why certain intervention targets were chosen over others. Here, we report the development and initial validation of a questionnaire to identify intervention targets for Mental Health Service Use (MHSU) behaviours in a workplace mental health intervention in the Canadian Armed Forces. The questionnaire is based on the well-established Theory of Planned Behaviour (TPB) and measures MHSU attitudes, subjective norms, perceived behavioural control, and intentions. Methods: We present three validation studies using a cross-sectional survey design, with a total of 478 participants. Participants include Non-Commissioned Member (NCM) recruits. Results: Findings provide evidence for high internal consistency, with a 6-factor solution derived from two consecutive exploratory factor analyses. Findings also provide evidence for the utility of the questionnaire for predicting MHSU intentions. Discussion: We discuss the implications of our findings for workplace mental health interventions attempting to use the popular TPB to change MHSU behaviours.

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Attitude Change;Mental Health;Mental Health and Resiliency
Report Number
DRDC-RDDC-2019-R111 — Scientific Report
Date of publication
01 Jul 2019
Number of Pages
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