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Direct linkGeorgiou, George K.; Martinez, Dalia; Vieira, Ana Paula Alves; Guo, Kan – Annals of Dyslexia, 2021
The purpose of this meta-analysis was to examine if individuals with dyslexia (DYS) have a deficit in orthographic knowledge. We reviewed a total of 68 studies published between January 1990 and December 2019, representing a total of 7215 participants. There were 80 independent samples in the chronological-age (CA)-DYS comparison and 33…
Descriptors: Orthographic Symbols, Dyslexia, Meta Analysis, Effect Size
Parrila, Rauno; Dudley, Dean; Song, Shuang; Georgiou, George K. – Annals of Dyslexia, 2020
We provide a meta-analytic review of all group-comparison studies that used reading-level match design, were conducted in highly consistent European orthographies, included children with dyslexia younger than 13 years of age as participants, and included measures of one or more of the potential causes of dyslexia. We identified 21 studies meeting…
Descriptors: Reading Research, Dyslexia, Children, Phonological Awareness
Georgiou, George K.; Ghazyani, Raabia; Parrila, Rauno – Annals of Dyslexia, 2018
The purpose of this study was to examine different hypotheses in relation to RAN deficits in dyslexia. Thirty university students with dyslexia and 32 chronological-age controls were assessed on RAN Digits and Colors as well as on two versions of RAN Letters and Objects (one with five items repeated 16 times and one with 20 items repeated four…
Descriptors: College Students, Dyslexia, Control Groups, Articulation (Speech)
