Predictors of developmental dyslexia in European orthographies with varying complexity

• DOI: 10.1111/jcpp.12029
• Publication Date: 2012-12-12T09:16:57Z
• Authors: Karin Landerl; Franck Ramus; Kristina Moll; Heikki Lyytinen; Paavo H. T. Leppänen; Kaisa Lohvansuu; Michael O’Donovan; Julie Williams; Jürgen Bartling; Jennifer Bruder; Sarah Kunze; Nina Neuhoff; Dénes Tóth; Ferenc Honbolygó; Valéria Csépe; Caroline Bogliotti; Stéphanie Iannuzzi; Yves Chaix; Jean‐François Dém...; Emilie Longeras; Sylviane Valdois; Camille Chabernaud; Florence Delteil‐...; Catherine Billard; Florence George; Johannes C. Ziegler; Isabelle Comte‐Ge...; Isabelle Soares‐B...; Christophe‐Loïc G...; Leo Blomert; Anniek Vaessen; Patty Gerretsen; Michel Ekkebus; Daniel Brandeis; Urs Maurer; Enrico Schulz; Sanne van der Mark; Bertram Müller‐My...; Gerd Schulte‐Körne
• Keywords: Rapid automatized naming; Orthography

Background: The relationship between phoneme awareness, rapid automatized naming (RAN), verbal short‐term/working memory (ST/WM) and diagnostic category is investigated in control dyslexic children, the extent to which this depends on orthographic complexity. Methods: General cognitive, phonological literacy skills were tested 1,138 1,114 children speaking six different languages spanning a large range of complexity (Finnish, Hungarian, German, Dutch, French, English). Results: Phoneme deletion RAN strong concurrent predictors developmental dyslexia, while ST/WM general abilities played comparatively minor role. In logistic regression models, more participants classified correctly when orthography was complex. impact RAN‐digits stronger complex than less orthographies. Conclusions: Findings are largely consistent with literature dyslexia skills, uniquely demonstrating how exacerbates some symptoms dyslexia.