The treatment effects of a reading intervention study by Hatcher, Hulme and Ellis (1994) have been described as unstable (Cossu 1999) and to be evidence that reading-delayed children are impervious to intervention. Data are presented to show that, in this study, the combined reading and phonological awareness training group (R+P) made greater progress in learning to read than the Reading alone (R) and Phonological awareness alone (P) groups in addition to that of the unseen control group (C). Group R+P also exhibited effect sizes of 1.1 to 2.6 for accuracy, and 1.3 to 1.6 for comprehension, some nine months after the intervention had ceased. These data affirm the stability of the treatment effect, the Sound Linkage hypothesis and the effectiveness of comprehensive and well-structured intervention programmes.
Reading and Writing – Springer Journals
Published: Oct 7, 2004
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