“…Within these tasks, infants also display predictable patterns of attention shifting (Mast, Fagen, & Rovee-Collier, 1980), motor coordination (Heathcock et al, 2005), and affect variation (Alessandri, Sullivan, & Lewis, 1990). These tasks have been used to identify early impairments across a range of other populations such as infants with preterm birth (Rose, Feldman, & Jankowski, 2001;Heathcock et al, 2005;Heathcock et al, 2004), Down syndrome (Ohr & Fagen, 1993), and prenatal cocaine exposure (Alessandri et al, 1993). Although AU sibs have not been tested within learning tasks, preliminary evidence of abnormality in aspects of their visual attention may affect their performance (Bryson et al, 2007;Rose et al, 2001).…”