Tower Test (DKEFS subtest (Delis et al., 2001) is a test of planning and problem solving abilities. Planning and organizational deficits have been reported in children with ADHD (Grodzinsky and Diamond, 1992, Mataro et al., 1997, Wilcutt et al., 2005) and will be targeted by Mega Team. Participants will be asked to construct towers of discs on a set of pegs corresponding to a model. Raw scores reflecting the participant's ability to use the fewest possible moves to achieve the tower depicted in the model.