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Direct linkDavis, J. Mark; Cheung, Shu Fai; Takahashi, Tomone; Shinoda, Haruo; Lindstrom, William A. – Research in Developmental Disabilities: A Multidisciplinary Journal, 2011
Prior research with children generally supports the two-dimensional structure of Attention-Deficit/Hyperactivity Disorder (ADHD; inattentive and hyperactive/impulsive factors) of the DSM-IV-TR as well as invariance of the two-factor structure across nations and cultures. Research with adults supports either a two-factor or three-factor structure…
Descriptors: Attention Deficit Hyperactivity Disorder, Factor Structure, Rating Scales, Factor Analysis
Tani, Iori; Okada, Ryo; Ohnishi, Masafumi; Nakajima, Shunji; Tsujii, Masatsugu – Research in Developmental Disabilities: A Multidisciplinary Journal, 2010
Using the Japanese version of home form of the ADHD-RS, this survey attempted to compare the scores between the US and Japan and examined the correlates of ADHD-RS. We collected responses from parents or rearers of 5977 children (3119 males and 2858 females) in nursery, elementary, and lower-secondary schools. A confirmed factor analysis of…
Descriptors: Measures (Individuals), Validity, Factor Analysis, Foreign Countries
Shoji, Hiroaki; Koizumi, Natsuko; Ozaki, Hisaki – Research in Developmental Disabilities: A Multidisciplinary Journal, 2009
Linguistic lateralization in 10 adolescents with Down syndrome (average age: 15.7 years), 15 adolescents with intellectual disabilities of unknown etiology (average age: 17.8 years), 2 groups of children without disabilities (11 children, average age: 4.7 years; 10 children, average age: 8.5 years), and 14 adolescents without disabilities (average…
Descriptors: Age Differences, Comparative Analysis, Mental Retardation, Linguistics
