Veríssimo, LurdesLopes, JoãoLemos, Marina Serra de2013-07-022013-07-022007VERÍSSIMO, Lurdes; LOPES, João; LEMOS, Marina Serra de -Dificuldades de aprendizagem: obstáculos à definição e investigação. Revista Portuguesa De Investigação Educacional. ISSN 1645-4006. N.º6 (2007), p.47-60http://hdl.handle.net/10400.14/11792This article presents a brief critical reflection about the difficulties to get a unambiguous definition of learning disabilities. It will be presented some theoretical models that seem to contribute to the explanation of learning disabilities. Finally, some considerations in turn of methodological issues are presented.porjournal article