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Direct linkBjornsdottir, Gyda; Halldorsson, Jonas G.; Steinberg, Stacy; Hansdottir, Ingunn; Kristjansson, Kristleifur; Stefansson, Hreinn; Stefansson, Kari – Journal of Learning Disabilities, 2014
This article describes psychometric testing of an Icelandic adaptation of the "Adult Reading History Questionnaire" (ARHQ), designed to detect a history of reading difficulties indicative of dyslexia. Tested in a large and diverse sample of 2,187 adults, the Icelandic adaptation demonstrated internal consistency reliability (Cronbach's…
Descriptors: Foreign Countries, Questionnaires, Reading Difficulties, Dyslexia
Frazier, Thomas W.; Youngstrom, Eric A.; Glutting, Joseph J.; Watkins, Marley W. – Journal of Learning Disabilities, 2007
This article presents results from two interrelated studies. The first study conducted a meta-analysis of the published literature since 1990 to determine the magnitude of achievement problems associated with attention-deficit/hyperactivity disorder (ADHD). Effect sizes were significantly different between participants with and without ADHD…
Descriptors: Parent Attitudes, Student Attitudes, College Students, Standardized Tests
Peer reviewedFischer, Mariellen; Newby, Robert F. – Journal of Learning Disabilities, 1998
A study examined the efficacy of the Restricted Academic Task in evaluating the effects of stimulant medication in 149 children (ages 5-17) with attention deficit hyperactivity disorder. The measure consists of standardized observation of a child performing an academic-like task, and was found to be both reliable and valid. (Author/CR)
Descriptors: Academic Ability, Attention Deficit Disorders, Behavior Modification, Drug Therapy
