Hirokazu Osada

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To assess the utility of the Childhood Autism Rating Scale - Tokyo Version (CARS-TV), its total score was compared among 430 children with DSM-IV per subgroup (i.e. autistic disorder (AD), childhood disintegrative disorder (CDD), Asperger's disorder, and pervasive developmental disorders (PDD) not otherwise specified (PDDNOS)). Values of Cronbach's alpha(More)
A Japanese version of the Autism Spectrum Quotient (AQ), AQ-J was administered to 25 normally intelligent high-functioning pervasive developmental disorder (HPDD) patients (mean age, 24.2 years; 24 male, one female) and 215 controls (mean age, 30.4 years; 86 male, 129 female) randomly selected from the general population. The AQ-J had satisfactory internal(More)
Asperger syndrome (AS) and autistic disorder are two subtypes of pervasive developmental disorders (PDD), but there has been considerable debate over whether AS and autistic disorder without mental retardation (IQ > or = 70), called high-functioning autism (HFA), are distinct conditions or not. The aim of the present paper was to clarify this issue through(More)
To assess autistic symptom differences between high-functioning atypical autism (atypical symptomatology) (HAA; IQ >/= 70) and childhood autism (HCA), 53 HAA children (mean: 6.0 +/- 0.5 years) were compared with 21 HCA children (mean: 8.2 +/- 1.1 years) on the Childhood Autism Rating Scale-Tokyo version (CARS-TV). Because IQ on the Japanese version of the(More)
Age- and IQ-balanced 27 children with high-functioning (IQ>or=70) pervasive developmental disorder not otherwise specified (HPDDNOS) and 27 children with attention-deficit/hyperactivity disorder (ADHD) were compared on the Japanese version of Wechsler Intelligence Scale for Children Third Edition (WISC-III) and the Childhood Autism Rating Scale-Tokyo(More)
Based on the clinical records of 74 children with pervasive developmental disorders (PDD; mean age, 45.2 months; 62 boys), the utility of the Kyoto Scale of Psychological Development in cognitive assessment of young and/or mentally retarded PDD children was investigated. Because the overall developmental quotient (DQ) had the highest correlation with the IQ(More)
In order to test clinical validity of DSM-IV childhood disintegrative disorder (CDD), 10 CDD children (mean age = 8.2 years, SD = 3.8; 7 male and 3 female) and 30 age- and gender-matched children with DSM-IV autistic disorder (AD) with speech loss (SL) (ADSL) were compared on 24 variables not directly related to CDD criteria. Compared with the ADSL(More)
To clarify the difference of Diagnostic and Statistical Manual of Mental Disorders (4th edn; DSM-IV) childhood disintegrative disorder (CDD) from International Classification of Diseases (9th revision; ICD-9) disintegrative psychosis (DP), 10 CDD children (mean age, 7.7 years) and 18 DP children (mean, 6.5 years) not diagnosed as CDD divided into DSM-IV(More)
The purpose of the present paper was to test the validity of developmental quotients (DQ) on the Mental Development Scale for Infants and Young Children (MDSIYC) as an estimate of intelligence quotient (IQ). Correlations were carried out of its DQ with an IQ on the Japanese version of the Stanford-Binet in 94 children with Diagnostic and Statistical Manual(More)
To examine the external validity of DSM-IV childhood disintegrative disorder (CDD), 10 children (M = 8.2 yrs) with CDD and 152 gender- and age-matched children with autistic disorder (AD) were compared on 24 variables. The CDD children had a significantly higher rate of epilepsy, significantly less uneven intellectual functioning, and a tendency of greater(More)