10.26. Cambridge–Chicago Compulsivity Trait Scale (CHI-T)¶
(¶+) Reproduction of this task/scale is not permitted (or such permission is not clear). This CamCOPS task is a data collection tool only, with no scale text (unless configured locally to use externally provided text that the hosting institution is legally permitted to use). Use it only in conjunction with a licensed copy of the original task. If your institution is entitled to use the task, you may install an add-on XML file on your server containing the required strings, to make the task fully functional, but you must provide this XML file and its contents yourself (it is outside the scope of CamCOPS).
15-item measure of self-reported compulsivity.
15 items, rated on a 5-point scale: strongly disagree – strongly agree. Scored 0–4, with higher ratings for stronger agreement.
10.26.1. Intellectual property rights¶
Copyright (C) 2017 Samuel R. Chamberlain, Jon E. Grant.
Licensing: apply to authors for permission.
Chamberlain SR, Grant JE (2018). Initial validation of a transdiagnostic compulsivity questionnaire: the Cambridge-Chicago Compulsivity Trait Scale. CNS Spectrums 23: 340-346. https://www.ncbi.nlm.nih.gov/pubmed/29730994; https://doi.org/10.1017/S1092852918000810.
Tiego J, Trender W, Hellyer PJ, Grant JE, Hampshire A, Chamberlain SR (2023). Measuring compulsivity as a self-reported multidimensional transdiagnostic construct: large-scale (n = 182,000) validation of the Cambridge-Chicago Compulsivity Trait Scale. Assessment (online ahead of print). https://pubmed.ncbi.nlm.nih.gov/36680457/; https://doi.org/10.1177/10731911221149083.
Sam Chamberlain, personal communication, 2019 and 2023.
Pronounced “kye-tee” (by analogy to chi, chi-square), not “chit” (personal communication, task authors to Martin Burchell, Feb 2023).
Prior to CamCOPS v2.4.15 the 15 items were rated on a 4-point scale (scoring 0–3: 0 strongly disagree, 1 disagree, 2 agree, 3 strongly agree), for a total score of 45, and there was an additional question about subjective impairment with a yes/no answer. This reflects the original version used in Chamberlain & Grant (2018), and CHI-T v1.0 by internal numbering.
From CamCOPS v2.4.25, the range is 0–4 (0 strongly disagree, 1 disagree, 2 neither agree nor disagree, 3 agree, 4 strongly agree). The 15 questions are unchanged. This takes the total score to 60, and the additional yes/no question is no longer used. This reflects the version used for large-scale validation by Tiego et al. (2023), and CHI-T v1.1 by internal numbering. It is intended to replace the previous version.