- Individuals who: a) received any cognitive remediation in the 6 months prior to study entry or b)received more than 6 hours of cognitive remediation in the 12 months prior to study entry or c) received more than 15 hours in the 24 months prior to study entry. Cognitive remediation is defined as any behavioral intervention consisting of training activities that aim to target impairments in cognitive domains of sensory processing, attention, memory, processing speed, working memory, and executive functioning.