Here is a step-by-step tutorial on how to access SDT questionnaires on the CSDT website. On behalf of Drs. Richard Ryan and Edward Deci, and the Center for Self-Determination Theory, you have our permission to use the SDT scales for your academic (non-commerical) purposes. 

*If you have interest in using the questionnaires for commercial purposes, please contact [email protected]

 Step 1: You will need to  "Register" (even if you've previously registered before) and enter your name, email, and accept the terms and conditions.

 Step 2: Next, you will need to check "I'm not a robot" and then "Register".

*If it says your email is already registered, try again and use a different email address or adapt your email address slightly and see if it works.

 CSDT is a non-profit organization dedicated to providing you with the latest SDT research, practice, and tools. These free resources depend on our members and generosity from friends like you. Consider becoming a CSDT Member or donating today.

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 Contact us at [email protected] if you need any further assistance.