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A self-determination theory perspective of motivations for cannabis-related harm reduction behaviours: evaluation of an expanded and adapted Treatment Self-Regulation Questionnaire.

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Title: A self-determination theory perspective of motivations for cannabis-related harm reduction behaviours: evaluation of an expanded and adapted Treatment Self-Regulation Questionnaire.
Authors: Richards, Dylan K. (AUTHOR), McCool, Matison W. (AUTHOR), Pearson, Matthew R. (AUTHOR)
Source: Psychology & Health. Jun2026, Vol. 41 Issue 6, p822-845. 24p.
Subjects: Substance abuse, Autonomy (Psychology), T-test (Statistics), Research funding, Research methodology evaluation, Statistical sampling, Questionnaires, Structural equation modeling, Motivation (Psychology), Harm reduction, Health behavior, Research methodology, Psychometrics, Cannabis (Genus), College students, Factor analysis
Abstract: Objective: We sought to evaluate an expanded and adapted version of the Treatment Self-Regulation Questionnaire (TSRQ) to assess the internalization continuum of motivation per self-determination theory (SDT) for responsible cannabis use and cannabis protective behavioural strategies (PBS). Methods and measures: We recruited 1,196 college students (Study 1) and 1,409 adults (Study 2) who reported past-month cannabis to complete online surveys; a random sample of 501 adults in Study 2 completed a follow-up survey one month later. Results: We found support for a 3-factor exploratory structural equation model of a 26-item TSRQ representing autonomous motivation, controlled motivation, and amotivation. Associations of the TSRQ with cannabis outcomes were consistent with SDT such that greater autonomous motivation was associated with more frequent cannabis PBS use (e.g. 'Limit use to weekends'). In contrast, greater controlled motivation and amotivation were associated with more negative cannabis-related consequences and more severe cannabis use. Differences emerged for instructions referencing responsible cannabis use versus cannabis PBS in Study 1. Conclusions: The results support the use of the expanded and adapted TSRQ to assess motivations per SDT for cannabis harm reduction behaviours. These findings warrant replication and suggest that responsible cannabis use is conceptualized to be distinct from cannabis PBS. [ABSTRACT FROM AUTHOR]
Copyright of Psychology & Health is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Psychology and Behavioral Sciences Collection
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  Data: A self-determination theory perspective of motivations for cannabis-related harm reduction behaviours: evaluation of an expanded and adapted Treatment Self-Regulation Questionnaire.
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  Data: <searchLink fieldCode="AR" term="%22Richards%2C+Dylan+K%2E%22">Richards, Dylan K.</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22McCool%2C+Matison+W%2E%22">McCool, Matison W.</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Pearson%2C+Matthew+R%2E%22">Pearson, Matthew R.</searchLink> (AUTHOR)
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– Name: Abstract
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  Data: Objective: We sought to evaluate an expanded and adapted version of the Treatment Self-Regulation Questionnaire (TSRQ) to assess the internalization continuum of motivation per self-determination theory (SDT) for responsible cannabis use and cannabis protective behavioural strategies (PBS). Methods and measures: We recruited 1,196 college students (Study 1) and 1,409 adults (Study 2) who reported past-month cannabis to complete online surveys; a random sample of 501 adults in Study 2 completed a follow-up survey one month later. Results: We found support for a 3-factor exploratory structural equation model of a 26-item TSRQ representing autonomous motivation, controlled motivation, and amotivation. Associations of the TSRQ with cannabis outcomes were consistent with SDT such that greater autonomous motivation was associated with more frequent cannabis PBS use (e.g. 'Limit use to weekends'). In contrast, greater controlled motivation and amotivation were associated with more negative cannabis-related consequences and more severe cannabis use. Differences emerged for instructions referencing responsible cannabis use versus cannabis PBS in Study 1. Conclusions: The results support the use of the expanded and adapted TSRQ to assess motivations per SDT for cannabis harm reduction behaviours. These findings warrant replication and suggest that responsible cannabis use is conceptualized to be distinct from cannabis PBS. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Psychology & Health is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – Type: doi
        Value: 10.1080/08870446.2025.2489945
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 24
        StartPage: 822
    Subjects:
      – SubjectFull: Substance abuse
        Type: general
      – SubjectFull: Autonomy (Psychology)
        Type: general
      – SubjectFull: T-test (Statistics)
        Type: general
      – SubjectFull: Research funding
        Type: general
      – SubjectFull: Research methodology evaluation
        Type: general
      – SubjectFull: Statistical sampling
        Type: general
      – SubjectFull: Questionnaires
        Type: general
      – SubjectFull: Structural equation modeling
        Type: general
      – SubjectFull: Motivation (Psychology)
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      – SubjectFull: Harm reduction
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      – SubjectFull: Health behavior
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      – SubjectFull: Research methodology
        Type: general
      – SubjectFull: Psychometrics
        Type: general
      – SubjectFull: Cannabis (Genus)
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      – SubjectFull: College students
        Type: general
      – SubjectFull: Factor analysis
        Type: general
    Titles:
      – TitleFull: A self-determination theory perspective of motivations for cannabis-related harm reduction behaviours: evaluation of an expanded and adapted Treatment Self-Regulation Questionnaire.
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              Text: Jun2026
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              Y: 2026
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