Derwin Chan Research

Scales developed based on Self-Determination Theory (Deci & Ryan, 1985)

Health and Safety Beliefs

Scales developed based on the Theory of Planned Behaviour (Ajzen, 1985)

Social Influence

Treatment Adherence Scales

Derwin Chan Research

Questionnaires

Noted: If you are interested to the questionnaire, please visit my OSF

Doping related measures