Research on Self-Determination Theory has included laboratory experiments and field studies in several different settings. In order to do this research, we have developed many questionnaires to assess different constructs contained within the theory. Each questionnaire page will typically include:
- the scale
- description of the scale
- a key for the scale, and
- references for articles describing studies that used the scale
*** Please note that all questionnaires on this web site, developed for research on self-determination theory, are copyrighted. You are welcome to use the instruments for academic (non-commercial) research projects. However, you may not use any of them for any commercial purposes without written permission to do so from the Center for Self-Determination Theory.
To inquire about a commercial request, please email: [email protected]
Click on any questionnaire name below to access the scale or set of questionnaires and other information.
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Basic Psychological Need Satisfaction, and Frustration Scales
Self-determination theory posits three universal... Read more
Health-Care Self-Determination Theory Questionnaire
NOTE: Refresh your browser if you are unable to... Read more
Perceived Autonomy Support: The Climate Questionnaires
Scale Description One of the central tenets of SDT is that... Read more
Perceived Choice and Awareness of Self Scale (PCASS)
Refresh your browser if you are unable to download the... Read more
Perceived Parental Autonomy Support Scale (P-PASS)
NOTE: Refresh your browser a few times if... Read more