%0 Journal Article %T Re-Defining Dyslexia: Accounting for variability %A Pernet %A Cyril R. %A Dufor %A Olivier %A D¨¦monet %A Jean-Francois %J Escritos de Psicolog¨ªa (Internet) %D 2011 %I Scientific Electronic Library Online %X the scientific effervescence that reigns around developmental dyslexia is explained by the difficult challenge that consists of ascribing this handicap to a single cause whilst multiple profiles of dyslexic patients can be observed. in this chapter, we start by presenting the main neuro-cognitive hypotheses that aim to explain dyslexia. we then review the multidimensional nature of dyslexia, and discuss the necessity of using a common diagnostic criteria to improve our understanding of its true nature. we then conclude by presenting promising work connecting cerebral endophenotypes and behavioral phenotypes highlighting the need for a multi-factorial rather than mono-theoretical account of developmental dyslexia. %K developmental dyslexia %K multi-factorial deficit %K review. %U http://scielo.isciii.es/scielo.php?script=sci_abstract&pid=S1989-38092011000200003&lng=en&nrm=iso&tlng=en