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Direct linkShimada, Takafumi; Kitamoto, Atsushi; Todokoro, Ayako; Ishii-Takahashi, Ayaka; Kuwabara, Hitoshi; Kim, Soo-Yung; Watanabe, Kei-ichiro; Minowa, Iwao; Someya, Toshikazu; Ohtsu, Hiroshi; Osuga, Yutaka; Kano, Yukiko; Kasai, Kiyoto; Kato, Nobumasa; Sasaki, Tsukasa – Research in Autism Spectrum Disorders, 2012
We investigated whether advanced parental age and assisted reproductive technology (ART) are risk factors in autism spectrum disorders (ASDs), attention deficit hyperactivity disorder (ADHD), and Tourette syndrome (TS). Clinical charts of Japanese outpatients with ASD (n = 552), ADHD (n = 87), and TS (n = 123) were reviewed. Parental age of…
Descriptors: Attention Deficit Hyperactivity Disorder, Autism, Risk, Birth Order
Davis, 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
