University of Calgary

Instruments

This section contains the measures related to gambling and substance abuse that have been developed by Dr. David Hodgins and his research team. All measures listed on this website are available for download and use for research purposes, provided that appropriate citation is referenced. Most files are in pdf format and you will need Acrobat Reader to view them.

 

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Gambling Abstinence Self Efficacy Scale (GASS)

The GASS is a 21-item measure assessing self-efficacy to abstain from gambling across various high-risk situations. The attached manuscript provides description of scale development, reliability, and validity.

Click Here to Download the GASS

Click Here to Download the GASS Manuscript

Click Here to Download the GASS Scoring Key

*Please note, the weightings in Table 1 of the manuscript are not accurate.
Please refer to the updated GASS scoring key if you wish to score the scale.

 

Temptations for Gambling Questionnaire (TGQ)

The TGQ is a 21-item measure assessing temptation to gamble across various high-risk situations. The attached manuscript provides description of scale development, reliability, and validity.

Click Here to Download the TGQ

Click Here to Download the TGQ Manuscript

Click Here to Download the GASS and TGQ Scoring Grid

 

Timeline FollowBack for Gambling (TLFB)

Timeline Followback (TLFB; Sobell and Sobell, 1996) is a method of retrospectively assessing gambling behaviour over a specified period of time. The method was originally developed to assess alcohol use retrospectively but has been applied to other addictive behaviour including drugs and gambling. The procedure involves using calendars and memory aids to determine specific days and amounts of money gambled over a specified time period. TLFB can be done both in-person and over the telephone.

The following are instructions, tips, and notes compiled by Dr. David Hodgins and researchers at the Addictive Behaviours lab for utilizing TLFB to retrospectively assess gambling behaviour. The attached manuscript provides a description of a study using TLFB to assess gambling behaviour based upon gambler and collateral report.

The manuscript appear in the Journal of Psychology of Addictive Behaviors and the reference is:

Hodgins, David, C., and Makarchuk, Karyn. (2003). Trusting problem gamblers: Reliability and validity of self-reported gambling behaviour. Psychology of Addictive Behaviors, 17(3), pp. 244-48.


Click Here to Download TLFB Instructions

Click Here to Download the TLFB Manuscript

 

Readiness to Change Questionnaire (Clinician rated)

The readiness to change questionnaire--clinician version (RCQ-CV) provides a measure of stage of change based upon the transtheoretical model of change (Prochaska, DiClemente, and Norcross, 1992). Separate versions are provided for both alcohol problems and drug problems. The attached manuscript provides a description of the development of the RCQ-CV, validity and reliability.

The manuscript appears in the journal Substance Abuse and the reference is:

Hodgins, David, C. (2001). Stages of change assessments in alcohol problems: Agreement across self and clinician reports. Substance Abuse, 22(2), pp. 87-96.


Click Here to Download RCQ-CV for Alcohol Problems

Click Here to Download the RCQ-CV for Drug Problems

Click Here to Download the RCQ-CV Manuscript