Erratum
In the original article, the symbols in the key of Figure 1 were reversed. The Ritalin IR line should have been dotted with a square datapoint, and the Ascending line should have been unbroken with a round datapoint. A corrected version of the figure appears below. The authors regret the error.
Efficacy of a New Pattern of Delivery of Methylphenidate for the Treatment of ADHD: Effects on Activity Level in the Classroom and on the Playground
JAMES M. SWANSON, PH.D.; SUNEEL GUPTA, PH.D.; LILLIE WILLIAMS, M.D.; DAVE AGLER, M.A.; MARC LERNER, M.D.; SHARON WIGAL, PH.D.