Rolando D Tiu, Sally J Wadsworth, Richard K Olson, John C DeFries
{"title":"阅读障碍的因果模型:一项双胞胎研究。","authors":"Rolando D Tiu, Sally J Wadsworth, Richard K Olson, John C DeFries","doi":"10.1375/136905204774200550","DOIUrl":null,"url":null,"abstract":"<p><p>The genetic and environmental relationships among measures of phoneme awareness, naming speed, Intelligence Quotient (IQ), and reading performance were investigated in 623 identical and fraternal twin pairs tested in the Colorado Learning Disabilities Research Center. A Cholesky decomposition analysis of these measures provided evidence supporting the double deficit hypothesis that difficulties in phonological processing and naming speed both contribute to reading disability. Additionally, the model revealed marginally significant genetic and significant non-shared environmental relationships between IQ and reading independent of naming speed and phoneme awareness. Thus a more complete causal model of reading disability should include IQ as well as measures of phonological processing and naming speed.</p>","PeriodicalId":75270,"journal":{"name":"Twin research : the official journal of the International Society for Twin Studies","volume":"7 3","pages":"275-83"},"PeriodicalIF":0.0000,"publicationDate":"2004-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1375/136905204774200550","citationCount":"12","resultStr":"{\"title\":\"Causal models of reading disability: a twin study.\",\"authors\":\"Rolando D Tiu, Sally J Wadsworth, Richard K Olson, John C DeFries\",\"doi\":\"10.1375/136905204774200550\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>The genetic and environmental relationships among measures of phoneme awareness, naming speed, Intelligence Quotient (IQ), and reading performance were investigated in 623 identical and fraternal twin pairs tested in the Colorado Learning Disabilities Research Center. A Cholesky decomposition analysis of these measures provided evidence supporting the double deficit hypothesis that difficulties in phonological processing and naming speed both contribute to reading disability. Additionally, the model revealed marginally significant genetic and significant non-shared environmental relationships between IQ and reading independent of naming speed and phoneme awareness. Thus a more complete causal model of reading disability should include IQ as well as measures of phonological processing and naming speed.</p>\",\"PeriodicalId\":75270,\"journal\":{\"name\":\"Twin research : the official journal of the International Society for Twin Studies\",\"volume\":\"7 3\",\"pages\":\"275-83\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2004-06-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1375/136905204774200550\",\"citationCount\":\"12\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Twin research : the official journal of the International Society for Twin Studies\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1375/136905204774200550\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Twin research : the official journal of the International Society for Twin Studies","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1375/136905204774200550","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Causal models of reading disability: a twin study.
The genetic and environmental relationships among measures of phoneme awareness, naming speed, Intelligence Quotient (IQ), and reading performance were investigated in 623 identical and fraternal twin pairs tested in the Colorado Learning Disabilities Research Center. A Cholesky decomposition analysis of these measures provided evidence supporting the double deficit hypothesis that difficulties in phonological processing and naming speed both contribute to reading disability. Additionally, the model revealed marginally significant genetic and significant non-shared environmental relationships between IQ and reading independent of naming speed and phoneme awareness. Thus a more complete causal model of reading disability should include IQ as well as measures of phonological processing and naming speed.
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