Neuropsychological Assessment and Ageing Processes (NAAP) group from the Center for Research in Neuropsychology and Cognitive and Behavioral Intervention (CINEICC), University of Coimbra, Coimbra, Portugal.
Psychological Assessment and Psychometrics Laboratory, Faculty of Psychology and Educational Sciences, University of Coimbra, Rua do Colégio Novo, 3000-115, Coimbra, Portugal.
Ann Dyslexia. 2020 Apr;70(1):43-61. doi: 10.1007/s11881-020-00190-1. Epub 2020 Feb 24.
The present study aimed to investigate the double-deficit hypothesis (DDH) in an orthography of intermediate depth. Eighty-five European Portuguese-speaking children with developmental dyslexia, aged 7 to 12, were tested on measures of phonological awareness (PA), naming speed (NS), reading, and spelling. The results indicated that PA and NS were not significantly correlated, and that NS predicts reading fluency (but not reading accuracy and spelling) beyond what is accounted for by PA. Although the majority of the children with developmental dyslexia have double deficit (62.4%), some children have a single phonological deficit (24.7%) or a single NS deficit (8.2%). Children with a double deficit were not more impaired in reading fluency, reading accuracy, and spelling than both single-deficit subtypes. In conclusion, the findings of the present study are partially consistent with the DDH and provide evidence for the multifactorial model of developmental dyslexia. Implications of the DDH for an orthography of intermediate depth are emphasized.
本研究旨在探讨中等深度正字法中的双重缺陷假说（DDH）。对 85 名患有发展性阅读障碍的 7 至 12 岁欧洲葡萄牙语儿童进行了语音意识（PA）、命名速度（NS）、阅读和拼写测试。结果表明，PA 和 NS 之间没有显著相关性，NS 可以预测阅读流畅度（但不能预测阅读准确性和拼写），而不仅仅是 PA 可以预测。尽管大多数患有发展性阅读障碍的儿童都存在双重缺陷（62.4%），但有些儿童只有单一的语音缺陷（24.7%）或单一的 NS 缺陷（8.2%）。具有双重缺陷的儿童在阅读流畅度、阅读准确性和拼写方面的障碍并不比单一缺陷的两种亚型更严重。总之，本研究的结果部分符合 DDH，并为发展性阅读障碍的多因素模型提供了证据。强调了 DDH 对中等深度正字法的影响。
