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To download the copyrighted questionnaires on the CSDT web site, you must agree to our terms and conditions.

All academic use is permitted, but you must obtain permission from the Center for Self-Determination Theory for commercial use.

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Perceived Choice and Awareness of Self Scale (PCASS)

This scale assesses individual differences (trait level) in perceived choice and awareness of self. Perceived choice reflects feeling a sense of choice with respect to one’s behavior and awareness of self reflects being aware of one’s feelings and one’s sense of self. The PCASS is a short, 10- item scale, with two 5-item subscales. The first subscale is perceived choice in one’s actions, and the second is awareness of oneself. The subscales can either be used separately or they can be combined into an overall score.

This scale was formerly labeled as Self-Determination Scale (SDS) and has been renamed to better capture the constructs it assesses. Those interested in measures of self-determination, please refer to the following: (1) General Causality Orientations Scale (GCOS) or (2) Autonomous Functioning Index (AFI) when assessing global individual differences in self- determination/autonomy; (3) Self-Regulation Questionnaires (SRQ) when assessing self- determination/autonomy of a specific domain/behavior (e.g., academic, exercise).


Main Questionnaire

Key Articles Using Questionnaires

(2007) Psychology of Sport & Exercise

The 2x2 achievement goal framework in a physical education context

Wang, C. K. J. Elliot, A. J.

(1995) Creativity and self-determination in personality

Creativity and self-determination in personality

Sheldon, K. M.

(1996) Personality and Social Psychology Bulletin

What makes for a good day? Competence and autonomy in the day and in the person

Sheldon, K. M. Ryan, R. M. Reis, H. T.

(2002) Journal of Personality

Implicit and self-attributed achievement motives: Concordance and predictive

Thrash, T. M. Elliot, A. J.