By quantitative transmission disequilibrium testing (QTDT) and linear association modeling, we found evidence that two functionally related genes, FOXP2 and CNTNAP2, that play a role in speech and language impairments, are associated with phonological memory, real word reading rate, and measures of sequential motor ability in our ascertained for dyslexia (Peter et al., 2011b). Here, FOXP2 is linked to dyslexia.