In the November issue of the Journal, there was an error in the article by Clyde Francks, D.Phil., et al. titled "Familial and Genetic Effects on Motor Coordination, Laterality, and Reading-Related Cognition" (Am J Psychiatry 2003; 160:1970–1977). The content of Tables 3 and 4 was switched, although the table titles and footnotes are correct.