“…It seems probable that several different biological and neurological factors may contribute to the autistic syndrome; that is, it may have a heterogeneous etiology. Additionally, sensori-motor deficits have been reported in dyslexia (Fawcett et al, 1996;Livingstone et al, 1991;Lovegrove, Bowling, Badcock, & Blackwood, 1980;Tallal, 1980), and motion detection impairments have been reported in Williams syndrome (Atkinson et al, 1997). Ramus (2002) has proposed that sensori-motor impairments are not a core feature of dyslexia, but rather secondary features arising only in cases with excessive foetal testosterone.…”