Upcoming Events #SDT2019 Conference Website LIVE CONFERENCE UPDATES: Early-Bird Registration Ends Feb 28th!!!!! ISBNPA 2015 Pre-Conference Event Latest News ScienCentral: Violence Not What Attracts Video Gamers, Says Study ‘What Do Thought Leaders Say About Wellness?’ Listen to the ‘Brave Endurance Wellness Podcast’ with SDT Co-Founder Richard Ryan. SDT Co-Founder Richard Ryan presents Webinar on Physical Activity and Nutrition for the ISBNPA Basic Psychological Needs Eating behavior Health Internalization and Self-regulatory Styles Longitudinal Perfectionism Research Reports Self and Self-Esteem