The purpose of this qualitative study was to describe the verbal interventions produced by teachers to support pupils' development of orthographic knowledge through invented spelling in three research-based intervention conditions: conventional (C condition), proximal (P condition), and progressive complexification (PC condition). We recorded six…

We evaluated the impact of teaching complex grapheme-phoneme correspondences (GPC) derived from the Simplicity Principle to at-risk poor readers in Grade 2 classrooms, using a two-arm dual site matched control trial intervention. Poor word readers (n = 149) were allocated to either a) Simplicity GPC (n= 79) or b) Letter-Name Control (n= 70) small…

The Double Deficit Hypothesis of dyslexia is one approach to classifying students with reading disabilities. The theory offers four distinct groups of readers: (a) average readers, (b) students with phonological deficits, (c) students with naming speed deficits, and (d) students with double deficits: those having both (b) and (c). This study…

This report describes a cluster randomized control trial (RCT) intervention study of the effectiveness of the ABRACADABRA (ABRA) Web-based literacy system using a classroom-level RCT intervention with 1,067 children in 74 kindergarten and Grade 1 or Grade 1/2 classrooms across Canada. The authors closely followed the CONSORT criteria for executing…

A sample of 141 Canadian children in grades 3 through 6 wrote to dictation 24 short sentences sampling 90 lexical items representing 10 inflectional morphological categories to study their relation to the written spelling of 40 sight words. The children were encouraged in 3, 30-minute teaching sessions to use multiple strategies of retrieval,…