Psychometric properties of Japanese version of the Swanson, Nolan, and Pelham, version-IV Scale-Teacher Form: a study of school children in community samples.
BACKGROUND
Psychometric properties of The Japanese version of Swanson, Nolan, and Pelham IV scale (SNAP-IV)-Teacher Form were examined in this study.


METHODS
Community samples of 1296 children (Grade 1-9, boys 52.9%) were collected from public elementary/middle schools in suburban areas. Teachers rated their children's behavior using Japanese version of SNAP-IV-Teacher Form and Strength and Difficulties Questionnaire (SDQ).


RESULTS
A three-factor structure model, which was equivalent with AD/HD symptoms subscales (inattention, hyperactivity/impulsivity) and oppositional-defiant disorder symptoms subscale was obtained and confirmed in an explorative/confirmative factorial analysis (Goodness-of-Fit Index=0.913, Comparative Fit Index=0.959, root mean square error of approximation=0.056). The current version of the SNAP-IV-Teacher Form demonstrated good test-retest reliability (intra-class correlation=0.752-0.822), high internal consistency (Cronbach's α=0.933-0.952), significant correlations with relevant subscales of Japanese version of SDQ, and typical effects of age and gender on those subscales.


CONCLUSIONS
The current study indicates that the Japanese version of SNAP-IV-Teacher Form is a reliable and valid instrument for rating symptoms related to AD/HD and ODD.
Department of Child Psychiatry, Shimada Ryoiku Center Hachioji, Tokyo, Japan; Department of Developmental Disorders, National Institute of Mental Health, National Center of Neurology and Psychiatry (NCNP), Tokyo, Japan. Electronic address: yu.inoue@shimada-ryoiku.or.jp.
Yuki
Y
Inoue
Department of Health and Medicine, Teikyo Heisei University, Tokyo, Japan.
Keiko
K
Ito
Department of Developmental Disorders, National Institute of Mental Health, National Center of Neurology and Psychiatry (NCNP), Tokyo, Japan.
Yosuke
Y
Kita
Department of Developmental Disorders, National Institute of Mental Health, National Center of Neurology and Psychiatry (NCNP), Tokyo, Japan.
Masumi
M
Inagaki
Department of Developmental Disorders, National Institute of Mental Health, National Center of Neurology and Psychiatry (NCNP), Tokyo, Japan.
Makiko
M
Kaga
University of California, Irvine, Child Development Center, CA, USA.
James M
JM
Swanson
D000367:Age Factors; D001289:Attention Deficit Disorder with Hyperactivity / Q000175:diagnosis*; D005260:Female; D006801:Humans; D007564:Japan; D008297:Male; D011594:Psychometrics; D015203:Reproducibility of Results; D012737:Sex Factors; D011795:Surveys and Questionnaires
Attention-deficit/hyperactivity disorder; Oppositional defiant disorder; SDQ; SNAP-IV