Abstract:
:The present study addresses the distinction between specific (SLI) and nonspecific (NLI) language impairment at an etiological level by estimating the relative genetic and environmental contributions to language impairment in children with SLI and NLI. Drawing on a large longitudinal twin study, we tested a sample of 356 four-and-a-half-year-old children with low language ability and their twin partners at home on a range of language and nonverbal measures. For children whose language and nonverbal abilities were both low (NLI), genetic influence on language impairment was moderate and shared environmental influence was substantial. A similar pattern emerged for children whose language difficulties occurred in apparent isolation (SLI), although there was a trend for the genetic effects to be smaller for SLI than for NLI: Group heritability was .18 for SLI and .52 for NLI. Probandwise cross-concordances were suggestive of some genetic overlap between these two groups, but not with a subgroup of children with more severe cognitive delay.
journal_name
J Learn Disabiljournal_title
Journal of learning disabilitiesauthors
Hayiou-Thomas ME,Oliver B,Plomin Rdoi
10.1177/00222194050380030401keywords:
subject
Has Abstractpub_date
2005-05-01 00:00:00pages
222-32issue
3eissn
0022-2194issn
1538-4780journal_volume
38pub_type
杂志文章abstract::Adolescents with and without learning disabilities (14, 16, and 18 years old) were tested to determine whether they differed in auditory, visual, and/or multisensory (combined auditory/visual) social perception abilities. Differences between the two groups in growth of auditory, visual, and multisensory social-percept...
journal_title:Journal of learning disabilities
pub_type: 杂志文章
doi:10.1177/002221948902200408
更新日期:1989-04-01 00:00:00
abstract::Gersten, Jordan, and Flojo (in this issue) provide the beginnings of an essential bridge between basic research on mathematical disabilities (MD) in young children and the application of this research for the early identification and remediation of these forms of learning disability. As they acknowledge, the field of ...
journal_title:Journal of learning disabilities
pub_type: 评论,杂志文章
doi:10.1177/00222194050380040401
更新日期:2005-07-01 00:00:00
abstract::The present study evaluated the stability of math learning difficulties over a 2-year period and investigated several factors that might influence this stability (categorical vs. continuous change, liberal vs. conservative cut point, broad vs. specific math assessment); the prediction of math performance over time and...
journal_title:Journal of learning disabilities
pub_type: 杂志文章
doi:10.1177/0022219411436214
更新日期:2013-09-01 00:00:00
abstract::Following a review of contemporary models of word-level processing for reading and their limitations, we propose a new hypothetical model of Chinese character reading, namely, the graded lexical space mapping model that characterizes how sublexical radicals and lexical information are involved in Chinese character rea...
journal_title:Journal of learning disabilities
pub_type: 杂志文章
doi:10.1177/0022219417718199
更新日期:2018-09-01 00:00:00
abstract::The present study explored the relationship between the intelligence of young adults and their performance on the Test of Variables of Attention (TOVA). The study also examined whether significant differences existed between adults with and without attention-deficit/ hyperactivity disorder (ADHD) on TOVA errors of omi...
journal_title:Journal of learning disabilities
pub_type: 杂志文章
doi:10.1177/002221940203500203
更新日期:2002-03-01 00:00:00
abstract::The article by Speece (in this issue) underscores the disappointing accuracy results of early screening for reading difficulties and argues that development conceptualized as rate of learning matters. We respond by emphasizing three points. First, the purpose of early screening could be identifying students not at ris...
journal_title:Journal of learning disabilities
pub_type: 杂志文章
doi:10.1177/00222194050380060401
更新日期:2005-11-01 00:00:00
abstract::Early identification of learning difficulties is a critical component of the Response to Intervention (RtI) model. In kindergarten, the screening of foundational reading skills can provide a data-based guideline for identifying students requiring a more intensive response-based intervention before starting elementary ...
journal_title:Journal of learning disabilities
pub_type: 杂志文章
doi:10.1177/0022219419893649
更新日期:2020-03-01 00:00:00
abstract::The purpose of this study was to examine the development of oral reading fluency in a sample of first-grade children. Using growth curve analysis, models of growth were identified for a combined sample of at-risk (AR) and not-at-risk (NAR) children, and predictors of growth were identified for the longitudinal AR samp...
journal_title:Journal of learning disabilities
pub_type: 杂志文章
doi:10.1177/00222194050380050201
更新日期:2005-09-01 00:00:00
abstract::Using a nationally representative sample of 5,150 Dutch students who have been followed over a 6-year period, the presence of the Matthew effect was investigated for general language skills. The analyses do not reveal unmistakable evidence for the supposition that the rich get richer and the poor poorer. On the contra...
journal_title:Journal of learning disabilities
pub_type: 杂志文章
doi:10.1177/0022219411410289
更新日期:2011-09-01 00:00:00
abstract::The final session of the National Research Center on Learning Disabilities (NRCLD) Responsiveness-to-Intervention (RTI) Symposium, "What are alternative models to LD identification other than RTI?" included four papers that discussed concerns over the exclusive reliance on an RTI approach to learning disability identi...
journal_title:Journal of learning disabilities
pub_type:
doi:10.1177/00222194050380061401
更新日期:2005-11-01 00:00:00
abstract::Currently, educators separate out from typical students those whose learning needs vary from the norm. The norming and sorting process may earmark students as "different" without providing markedly unique instruction and without producing robust academic outcomes. An alternative to fragmentation for some students is t...
journal_title:Journal of learning disabilities
pub_type: 杂志文章,评审
doi:10.1177/00222194040370060601
更新日期:2004-11-01 00:00:00
abstract::This article examines more than a decade of changes in special education research and in the use of technology. It discusses evolving research and projects funded by the Office of Special Education Programs (OSEP) and raises questions about the use of specific methodologies and about whether children with disabilities...
journal_title:Journal of learning disabilities
pub_type: 杂志文章,评审
doi:10.1177/002221949602900505
更新日期:1996-09-01 00:00:00
abstract::A synthesis of the extant research on peer-mediated reading and math interventions for students in regular or alternative education settings with academic difficulties and disabilities in Grades 6 to 12 (ages 11-18) is presented. Interventions conducted between 2001 and 2012 targeting reading and math were included if...
journal_title:Journal of learning disabilities
pub_type: 杂志文章,评审
doi:10.1177/0022219413504997
更新日期:2015-09-01 00:00:00
abstract::Assisted and unassisted performance of 14 average readers (7 boys and 7 girls between 9.67 and 13 years of age) and 14 children with learning disabilities (10 boys and 4 girls between 10.8 and 13 years of age) were compared on a reading comprehension task--stating the main idea in expository paragraphs in which the to...
journal_title:Journal of learning disabilities
pub_type: 杂志文章
doi:10.1177/002221949102400707
更新日期:1991-08-01 00:00:00
abstract::The goal of the current study was to compare two forms of dynamic assessment and standard assessment of preschool children's phonological awareness. The first form of dynamic assessment was a form of scaffolding in which item formats were modified in response to an error so as to make the task easier or more explicit....
journal_title:Journal of learning disabilities
pub_type: 杂志文章
doi:10.1177/0022219411407861
更新日期:2011-07-01 00:00:00
abstract::Within a large (N = 182) heterogeneous sample of clinic-referred children with DSM-III-diagnosed attention deficit disorder (ADD), three behavioral subgroups were identified via cluster analysis of teacher ratings: 40% of the children had ADD with hyperactivity (ADDH), 30% had ADD with hyperactivity and aggressivity (...
journal_title:Journal of learning disabilities
pub_type: 临床试验,杂志文章
doi:10.1177/002221949102400206
更新日期:1991-02-01 00:00:00
abstract::Visuospatial working memory and its involvement in arithmetic were examined in two groups of 7- to 11-year-olds: one comprising children described by teachers as displaying symptoms of nonverbal learning difficulties (N = 21), the other a control group without learning disabilities (N = 21). The two groups were matche...
journal_title:Journal of learning disabilities
pub_type: 杂志文章
doi:10.1177/0022219409355482
更新日期:2010-09-01 00:00:00
abstract::Previous research studies examining the effects of spelling and reading interventions on the spelling outcomes of students with learning disabilities (LD) are synthesized. An extensive search of the professional literature between 1995 and 2003 yielded a total of 19 intervention studies that provided spelling and read...
journal_title:Journal of learning disabilities
pub_type: 杂志文章
doi:10.1177/00222194060390060501
更新日期:2006-11-01 00:00:00
abstract::The purpose of this qualitative multicase study was to explore the perceptions of individuals who could speak from both sides of the special education desk--as students and as teachers. The three participants for this study each received special education services for learning disabilities while in school and were cur...
journal_title:Journal of learning disabilities
pub_type: 杂志文章
doi:10.1177/002221940103400103
更新日期:2001-01-01 00:00:00
abstract::This study investigated the effects of a peer teaching procedure, combined with student letter-writing activities, on the acquisition and generalization of capitalization skills. Three students, aged 9 years, obtained instruction from peer partners that included (a) an introduction and review of capitalization rules, ...
journal_title:Journal of learning disabilities
pub_type: 杂志文章
doi:10.1177/002221949102400103
更新日期:1991-01-01 00:00:00
abstract::The present study investigated whether the members of adolescents' peer groups are similar in reading and spelling disabilities and whether this similarity contributes to subsequent school achievement and educational attainment. The sample consisted of 375 Finnish adolescents whose reading and spelling disabilities we...
journal_title:Journal of learning disabilities
pub_type: 杂志文章
doi:10.1177/0022219410392043
更新日期:2011-11-01 00:00:00
abstract::There has been considerable discussion of the methods used for the identification of children with reading disabilities. This study examined three different methods that could be used in the identification of children with reading disabilities and their consistency with teacher ratings of behaviors believed to be asso...
journal_title:Journal of learning disabilities
pub_type: 杂志文章
doi:10.1177/002221940203500305
更新日期:2002-05-01 00:00:00
abstract::The present study investigated the use of the Reading Component Model to subgroup poor readers. A large sample of poor readers was identified in second grade and subgrouped on the basis of relative strengths and weaknesses in word recognition and listening comprehension. Although homogeneous subgroups were not identif...
journal_title:Journal of learning disabilities
pub_type: 杂志文章
doi:10.1177/002221940303600208
更新日期:2003-03-01 00:00:00
abstract::In this study, we examined whether think-aloud procedures would uncover differences in the kinds of inferences generated by average and below-average readers. Participants were 40 third-grade children who were divided into groups of average and below-average readers. All participants completed measures of nonverbal IQ...
journal_title:Journal of learning disabilities
pub_type: 杂志文章
doi:10.1177/00222194020350050401
更新日期:2002-09-01 00:00:00
abstract::This study examined the usefulness and predictive validity of a dynamic screening of phonological awareness in two samples of kindergarten children. In one sample (n = 90), the predictive validity of the dynamic assessment was compared to a static version of the same screening measure. In the second sample (n = 96), t...
journal_title:Journal of learning disabilities
pub_type: 杂志文章
doi:10.1177/0022219411407863
更新日期:2011-07-01 00:00:00
abstract::We assessed the impact of intrapersonal and interpersonal resilience, persistence, and number of difficulties in addition to reading problems on life satisfaction (general, social, and self) and academic achievement. A total of 120 adults with reading difficulties who either were completing a university degree or were...
journal_title:Journal of learning disabilities
pub_type: 杂志文章
doi:10.1177/0022219414522705
更新日期:2015-11-01 00:00:00
abstract::In part because learning strategies are often taught in isolated resource settings outside of the contexts in which students with learning disabilities are expected to apply this knowledge, generalization has been a significant challenge to educators. To address this problem, an instructional model is proposed for int...
journal_title:Journal of learning disabilities
pub_type: 杂志文章
doi:10.1177/002221949302600602
更新日期:1993-06-01 00:00:00
abstract::Deficits in phonological processing are theorized to be responsible for at least some reading disabilities. A considerable amount of research demonstrates that many students can be taught one of these phonological processes-phonemic awareness. However, not all students have responded favorably to this instruction. Res...
journal_title:Journal of learning disabilities
pub_type: 杂志文章
doi:10.1177/002221940103400306
更新日期:2001-05-01 00:00:00
abstract::This study evaluated the hypothesis that poor readers are characterized by poor nonword reading skills, but that a specific deficit, as opposed to a developmental lag, in nonword reading will be found only in subjects whose reading is discrepant from intellectual ability. To test this hypothesis, we measured nonword r...
journal_title:Journal of learning disabilities
pub_type: 杂志文章
doi:10.1177/002221949202500506
更新日期:1992-05-01 00:00:00
abstract::Self-perceptions of teacher feedback, social comparison of reading competence, reading satisfaction, and general self-worth were assessed among third and sixth graders with learning disabilities and normal achievement (n = 247). Relations among these variables and mean differences were examined within the and across g...
journal_title:Journal of learning disabilities
pub_type: 杂志文章
doi:10.1177/002221949803100109
更新日期:1998-01-01 00:00:00