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Grasby, Katrina L.; Byrne, Brian; Olson, Richard K. – Australian Journal of Education, 2015
Each year, all Australian students in grades 3, 5, 7 and 9 sit nationwide large-scale tests in literacy and numeracy which have their validity frequently questioned. We compared the performance of grade 3 twins on these large-scale reading tests with their performance on three individually administered literacy tests in comprehension, word reading…
Descriptors: Foreign Countries, National Competency Tests, Numeracy, Literacy
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Miller, Amanda C.; Keenan, Janice M.; Betjemann, Rebecca S.; Willcutt, Erik G.; Pennington, Bruce F.; Olson, Richard K. – Journal of Abnormal Child Psychology, 2013
We examined reading comprehension in children with ADHD by assessing their ability to build a coherent mental representation that allows them to recall central and peripheral information. We compared children with ADHD (mean age 9.78) to word reading-matched controls (mean age 9.89) on their ability to retell a passage. We found that even though…
Descriptors: Reading Comprehension, Short Term Memory, Reading Ability, Attention Deficit Hyperactivity Disorder
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Betjemann, Rebecca S.; Keenan, Janice M.; Olson, Richard K.; DeFries, John C. – Scientific Studies of Reading, 2011
Does the choice of test for assessing reading comprehension influence the outcome of genetic analyses? A twin design compared two types of reading comprehension tests classified as primarily associated with word decoding (RC-D) or listening comprehension (RC-LC). For both types of tests, the overall genetic influence is high and nearly identical.…
Descriptors: Reading Comprehension, Listening Comprehension, Siblings, Genetics
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Pennington, Bruce F.; McGrath, Lauren M.; Rosenberg, Jenni; Barnard, Holly; Smith, Shelley D.; Willcutt, Erik G.; Friend, Angela; DeFries, John C.; Olson, Richard K. – Developmental Psychology, 2009
This article examines Gene x Environment (G x E) interactions in two comorbid developmental disorders--reading disability (RD) and attention-deficit/hyperactivity disorder (ADHD)--as a window on broader issues on G x E interactions in developmental psychology. The authors first briefly review types of G x E interactions, methods for detecting…
Descriptors: Reading Difficulties, Attention Deficit Hyperactivity Disorder, Interaction, Developmental Psychology
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Keenan, Janice M.; Betjemann, Rebecca S.; Olson, Richard K. – Scientific Studies of Reading, 2008
Comprehension tests are often used interchangeably, suggesting an implicit assumption that they are all measuring the same thing. We examine the validity of this assumption by comparing some of the most popular reading comprehension measures used in research and clinical practice in the United States: the Gray Oral Reading Test (GORT), the two…
Descriptors: Reading Comprehension, Listening Comprehension, Age, Oral Reading