| 1. |
- Byrne, Brian, et al.
(författare)
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Behavior-genetic studies of academic performance in school students : A commentary for professional in psychology and education
- 2019. - 1
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Ingår i: Reading development and difficulties. - Cham : Springer. - 9783030265496 - 9783030265502 ; , s. 213-232
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Bokkapitel (refereegranskat)abstract
- 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.
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| 2. |
- Danielsson, Henrik, Professor, 1974-
(författare)
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Randomiserade kontrollerade studier av interventionsprogram för elever med tidiga läs- och matematiksvårigheter
- 2023
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Ingår i: Resultatdialog 2023. - : Vetenskapsrådet. - 9789189845107 ; , s. 15-18
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Bokkapitel (övrigt vetenskapligt/konstnärligt)abstract
- 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.
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| 3. |
- Lindström-Sandahl, Hanna, 1979-, et al.
(författare)
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A randomized controlled study of a second grade numeracy intervention with Swedish students at‐risk of mathematics difficulties
- 2024
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Ingår i: British Journal of Educational Psychology. - : Wiley. - 0007-0998 .- 2044-8279.
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Tidskriftsartikel (refereegranskat)abstract
- 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.
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| 4. |
- Lindström-Sandahl, Hanna, 1979-
(författare)
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Early Elementary School Interventions in Reading and Mathematics
- 2024
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Supplemental special education support in reading and mathematics is essential for some children who struggle to learn basic reading or mathematics skills in their first years of schooling. Previous research shows that supplemental phonics and early numeracy and arithmetic instruction help students at risk for reading or mathematics difficulties. Few intervention studies have been conducted in the Swedish elementary school context evaluating the effectiveness of early reading and mathematics instruction, limiting evidence-based practices guiding special education in Sweden. This thesis aimed to develop and test the impact of two intensive instructional programs on word reading and reading comprehension skills and number knowledge, arithmetic and problem solving. Transfer-effects of training across the reading and mathematics domains and the long-term impact of the programs were also investigated. The study enrolled 753 first grade students who were screened for low performance (≤25th percentile) in decoding, spelling, number knowledge and arithmetic. To evaluate how the impact of the interventions differ from regular school instruction, students were randomized to intervention and control groups and pre-tested with extended assessment of reading and mathematics skills (n=32 vs. 30 in mathematics, n=34 vs. 34 in reading). Both interventions were implemented at the start of second grade. The intervention programs spanned 36 lessons of supplemental explicit, one-to-one instruction with a special education teacher. Control group students received support planned by their schools. The results were evaluated at post-test and followed-up after 1 year. Both programs indicated significant intervention effects at post-test compared with controls with the reading intervention showing medium impact on decoding and reading comprehension and a strong effect on word recognition. The mathematics intervention program displayed significant moderate impact on number knowledge, arithmetic and basic problem solving. For both interventions, these effects declined at follow-up one year later. In addition, no transfer across reading and mathematics interventions were found. A main conclusion drawn from these randomized controlled studies is that students’ performance in basic reading and mathematics can be substantially accelerated by a time-limited and intense effort, adding to the evidence-base of explicit phonics and early numeracy and arithmetic intervention as recommended practices also in a Swedish school context. As many previous studies have shown, intervention gains tend to fade over time. The longevity of intensive intervention impacts should be considered in post-intervention efforts to support learning. Alignment between supplemental programs and general classroom instruction is suggested.
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| 5. |
- Lindström-Sandahl, Hanna, 1979-, et al.
(författare)
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Effects of a phonics intervention in a randomized controlled study in Swedish second-grade students at risk of reading difficulties
- 2023
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Ingår i: Dyslexia. - : John Wiley & Sons. - 1076-9242 .- 1099-0909. ; 29:4, s. 290-311
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Tidskriftsartikel (refereegranskat)abstract
- 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.
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| 6. |
- Nilsson, Karin, et al.
(författare)
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Decoding Abilities in Adolescents with Intellectual Disabilities : The Contribution of Cognition, Language, and Home Literacy
- 2021
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Ingår i: Journal of Cognition. - London : Ubiquity Press. - 2514-4820. ; 4:1, s. 1-16
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Tidskriftsartikel (refereegranskat)abstract
- 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.
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| 7. |
- Nilsson, Karin, 1987-, et al.
(författare)
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Investigating Reading Comprehension in Adolescents with Intellectual Disabilities : Evaluating the Simple View of Reading
- 2021
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Ingår i: Journal of Cognition. - : Ubiquity Press Ltd.. - 2514-4820. ; 4:1, s. 1-20
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Tidskriftsartikel (refereegranskat)abstract
- 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.
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| 8. |
- Nilsson, Karin, 1987-
(författare)
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Words Don’t Come Easy : Decoding and Reading Comprehension Difficulties in Adolescents with Intellectual Disability
- 2022
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Individuals with intellectual disability (ID) have difficulties with decoding and reading comprehension. However, studies focussing on why these difficulties occur are very sparse, and the existing literature has found conflicting results. This thesis investigated the development of reading abilities and the concurrent cognitive, linguistic, and environmental predictors of decoding and reading comprehension in Swedish adolescents with ID of unknown aetiology. In addition, this thesis evaluated the applicability of one of the most commonly used theoretical frameworks of reading comprehension: the Simple View of Reading (SVR). The results showed that the development of reading abilities in adolescents with ID is in line with the model of developmental delay. This means that the development of reading abilities is not qualitatively different from typical reading development, but the rate is slower. Further, it means that the pattern of concurrent predictors is similar to the pattern found in a younger typically developing population. In Swedish adolescents with ID decoding is predicted by phonological awareness and rapid automatized naming (RAN), and reading comprehension is predicted by decoding, vocabulary, and phonological executive-loaded working memory (ELWM). This thesis also found that the developmental trajectory of decoding plateaus at a mental age of 8:9 years, while it is expected in typically developing children that decoding ability continues to increase until early adolescence. The explanation for this early plateau could be either cognitive or educational, but most likely a combination of both. Lastly, the results from this thesis also suggest that the SVR is not sufficient for explaining reading comprehension in adolescents with ID. Instead, a combination of the SVR and the Lexical Quality Hypothesis (LQH) is suggested as a successful way of explaining the variance in reading comprehension. Taken together, the results from this thesis implies that reading instruction and interventions originally developed for typically developing children is likely to be effective for individuals with ID.
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| 9. |
- Olson, Richard, et al.
(författare)
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Etiology of developmental dyslexia
- 2019. - 1
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Ingår i: Developmental dyslexia across languages and writing systems. - New York : Cambridge University Press. - 9781108553377 ; , s. 391-412
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Bokkapitel (refereegranskat)
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| 10. |
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