Background: Early numeracy interventions including basicarithmetic are crucial for young students at risk for earlymathematics difficulties (MDs), yet few studies have evalu-ated numeracy interventions in second grade with a rand-omized controlled design.Aim: This pre- and post-test randomized controlled studyevaluated the effects of an intensive 9-week numeracy andarithmetic programme for second-grade students at risk forearly MDs. The focus of the programme was students’ foun-dational understanding of numbers and mathematical con-cepts and procedural fluency with arithmetic tasks.Sample: A total of 753 first-grade students from 21 schoolsin Sweden were screened for low achievement in numberknowledge and arithmetic.Methods: Students considered at risk for MDs (≤25 per-centile on two consecutive first-grade mathematics screen-ings) were individually randomized to an intervention group(n = 32) or control group (n = 30) at the beginning of secondgrade (7–8 years old). Trained teachers administered theone-to-one, explicit programme to intervention group stu-dents in elementary school settings. The intervention groupreceived numeracy instruction emphasizing foundationalmathematics concepts and procedures. Controls receivedteaching as usual with potential special education supportprovided by their schools.Results: The intervention group demonstrated significantlygreater improvements in conceptual knowledge, arithmeticcalculations and problem-solving compared to the controlgroup, with medium size effects observed.

Teaching phoneme awareness to children at risk for early reading difficulties has been recognized as successful in several studies. In this randomized controlled trial (RCT)-study, we add to this research by optimizing core procedural as well as teaching components in a phonics-directed intervention and extend the RCT reading intervention research into a semi-transparent language context. The aim of the present study was to evaluate the effects of a novel Swedish intensive phonics program. This randomized controlled pre-test and post-test intervention study targeted second-grade students with early reading difficulties. Students were identified by a repeated screening procedure and allocated to intervention (n = 34) and control (n = 34) conditions. A 9-week intensive phonics-based program was administrated one-to-one, by special education teachers in Swedish mainstream elementary schools. Results show an improvement in the intervention group, compared with the controls on all outcome measures. Findings indicate that the supplementary phonics program, delivered with high intensity, can significantly increase word reading skills and reading comprehension in second-grade students with early reading difficulties.

PurposeUsing data from 1,868 children from the US, Australia, and Sweden who took a 10-word spelling test in kindergarten and a standardized spelling test in Grades 1, 2, and (except for the Australian children) Grade 4, we examined two questions. First, does the quality of a childs errors on the kindergarten test help predict later spelling performance even after controlling for the number of correct responses on the kindergarten test? Second, does spelling develop at a faster pace in Swedish than in English?MethodWe measured kindergarten error quality based on the number of letter additions, deletions, and substitutions by which each error differed from the correct spelling. Using mixed-model analyses, we examined the relationship of this and other variables to later spelling performance.ResultsKindergarten error quality contributed significantly to the prediction of later spelling performance even after consideration of the number of correct spellings in kindergarten and other relevant variables. The Swedish children showed more rapid growth in spelling than the U.S. and Australian children, a difference that may reflect the greater transparency of sound-to-spelling links in Swedish.ConclusionInformation from a spelling test that is typically discarded - information about the nature of the errors -has value.

Forskningens syfte var att utveckla och utvärdera två interventioner för elever med tidiga lässvårigheter eller tidiga mattesvårigheter. Resultaten visade att bägge interventionerna hade en medelstor till stor effekt på förbättring för interventionsgrupperna direkt efter interventionerna. Ett år efter interventionerna hade de flesta av de positiva effekterna minskat till ungefär hälften.

Decoding abilities in individuals with intellectual disabilities (ID) are substantially lower than for typical readers. The underlying mechanisms of their poor reading remain uncertain. The aim of this study was to investigate the concurrent predictors of decoding ability in 136 adolescents with non-specific ID, and to evaluate the results in relation to previous findings on typical readers. The study included a broad range of cognitive and language measures as predictors of decoding ability. A LASSO regression analysis identified phonological awareness and rapid automatized naming (RAN) as the most important predictors. The predictors explained 57.73% of the variance in decoding abilities. These variables are similar to the ones found in earlier research on typically developing children, hence supporting our hypothesis of a delayed rather than a different reading profile. These results lend some support to the use of interventions and reading instructions, originally developed for typically developing children, for children and adolescents with non-specific ID.

Reading comprehension difficulties are common in individuals with intellectual disabilities (ID), but the influences of underlying abilities related to reading comprehension in this group have rarely been investigated. One aim of this study was to investigate the Simple View of Reading as a theoretical framework to describe cognitive and linguistic abilities predicting individual differences in reading comprehension in adolescents with non-specific ID. A second aim was to investigate whether predictors of listening comprehension and reading comprehension suggest that individuals with ID have a delayed pattern of development (copying early grade variance in reading comprehension) or a different pattern of development involving a new or an unusual pattern of cognitive and linguistic predictors. A sample of 136 adolescents with non-specific ID was assessed on reading comprehension, decoding, linguistic, and cognitive measures. The hypotheses were evaluated using structural equation models. The results showed that the Simple View of Reading was not applicable in explaining reading comprehension in this group, however, the concurrent predictors of comprehension (vocabulary and phonological executive-loaded working memory) followed a delayed profile.

Available behavior-genetic research indicates that the single largest factor influencing individual differences in literacy development is genetic endowment. We briefly review some typical evidence and methodology used in studying the behavior-genetics of reading. We then outline three hypothetical educational scenarios and demonstrate how behavior-genetic studies might play out in them, with the aim of enhancing the critical capacity of school psychologists and other educational professionals to evaluate research findings in this area. We show that heritability estimates will tend to be higher in educational environments in which the instruction and other factors are more uniform, that the way subsamples are combined can affect estimates, and that population-level estimates cannot be used to determine the etiology of any individual child’s performance. We address and dismiss genetic determinism, and review evidence to suggest that genetic accounts of reading disability may reduce blame and stigma yet increase pessimism about successful intervention. However, we argue that continued research into optimal ways to design and deliver curricula is quite compatible with the substantial heritability of individual differences in literacy and has already provided grounds for optimism. We also suggest that genetically derived constraints on academic progress bring into sharp focus questions about the goals of education.

AIM: We evaluated the development of reading skills in very low birthweight (VLBW) children and controls at 8-10 years of age.

METHODS: This study was part of a longitudinal study of VLBW infants born between January 1998 and December 1999 in Sweden. We recruited 49 VLBW children and 44 sex and age-matched full-term controls when they started school at the age of seven and tested them using identical methods for decoding, rapid naming ability, reading comprehension, and spelling and cognitive skills at about eight and 10 years of age. Univariate analysis of variance was performed to assess the effects of VLBW on reading performance at each age and to evaluate the differences between the groups and ages.

RESULTS: Very low birthweight children scored significantly lower in all domains of reading at 7.8 ± 0.3 years, but the performance gap had narrowed by 9.8 ± 0.3 years. Significant catch-up gains were found in phonological awareness, rapid naming ability and reading comprehension. The differences between the groups were minor at 10 years, when controlled for non-verbal cognition.

CONCLUSION: Very low birthweight children demonstrated worse reading performance at eight years of age than term-born controls. The gap in reading skills between the groups had largely narrowed two years later.

Previous research has established that learning to read improves children's performance on reading‐related phonological tasks, including phoneme awareness (PA) and nonword repetition. Few studies have investigated whether literacy acquisition also promotes children's rapid automatized naming (RAN). We tested the hypothesis that literacy acquisition should influence RAN in an international, longitudinal population sample of twins. Cross‐lagged path models evaluated the relationships among literacy, PA, and RAN across four time points from pre‐kindergarten through grade 4. Consistent with previous research, literacy showed bidirectional relationships with reading‐related oral language skills. We found novel evidence for an effect of earlier literacy on later RAN, which was most evident in children at early phases of literacy development. In contrast, the influence of earlier RAN on later literacy was predominant among older children. These findings imply that the association between these two related skills is moderated by development. Implications for models of reading development and for dyslexia research are discussed.