This study involving nearly 3000 participants looked at the effects of 3 different cognitive training strategies immediately following training and at a 2 year follow-up. Those who trained with Posit Science for 10 hours demonstrated improvement in both cognitive measures and everyday functioning immediately following training. After 2 years, training effects in cognition were shown to endure. Those who did a shorter “booster” session at the end of Year 1 improved even more across the board, both after training and at the 2 year mark.