Compulsive hoarders perform significantly worse than healthy controls on standard attention tasks. These data suggest that the inability to sustain focus may interfere with hoarders' ability to organize, categorize and make decisions about discarding possessions. Stimulants are first-line treatments for ADHD, improve CPT performance in people with ADHD and enhance school performance in children with ADHD. Extended release formulations, such as methylphenidate ER, are associated with better medication compliance. Together, these data suggest that adjunctive methylphenidate ER might be a novel way to improve attention in compulsive hoarders which might improve hoarding symptoms.