The study is completed at the youth's convenience. Participation is self paced and the time commitment varies with age: 8-10 y.o. - 1 hour divided over 2 days, 11-12 y.o. - 1.5 hours over four days, and 13-17 y.o. - 2 hours over five days. The Cognitive evaluation consists of game-like and school-like tasks aimed at measuring complex thinking capacities. The questionnaires assess social interactions, emotional well being, and daily function.