No relation between 2D???:???4D fetal testosterone marker and dyslexia

Bart Boets, Bert De Smedt, Jan Wouters, Katrien Lemay, Pol Ghesqui??re
2007 NeuroReport  
It has been suggested that high levels of prenatal testosterone exposure are implied in the aetiology of dyslexia and its frequently cooccurring sensory problems. This study examined 2D : 4D digit ratio (a marker of fetal testosterone exposure) in dyslexic and normal reading children. No group di¡erences in 2D : 4D were observed. Digit ratio did not show the postulated relation with reading, spelling, phonological ability, speech perception, auditory processing and visual processing. These
more » ... gs challenge the validity of theories that allocate a prominent role to fetal testosterone exposure in the aetiology of dyslexia and its sensory impairments. NeuroReport 18:1487^1491
doi:10.1097/wnr.0b013e3282e9a754 pmid:17712280 fatcat:gc2yxalwzfav7dj7ar4qlxc3uy