Four hundred and twenty-seven normal Icelandic @entity1 , six and eight years of age, were rated by their parents and three hundred and sixteen @entity1 by their teachers with the Teacher and Parent versions of the @entity71 Rating Scale-IV ( @entity195 /HDRS-IV). For two hundred and sixty-five of the @entity1 both parent and teacher ratings were obtained. The factor structures of the @entity195 /HDRS-IV for parents and teachers were in line with theoretical expectations. A Hyperactivity-Impulsivity factor and an Inattention factor were thus well supported. The subscale reliabilities were high. @entity1 scored higher than @entity1 on all measures and there was a decrease of symptoms with age for @entity1 , as expected. There was evidence of convergent validity for all scales, but discriminant validity of the @entity195 /HDRS-IV subscales is less certain. Generally the instruments seem promising for further research. Some differences are noted in comparison with earlier studies. Thus scores obtained in this study were somewhat lower than those found in American studies, especially for teachers. Also the prevalence of @entity71 based on rating scales was lower than in comparable previous studies. The similarity in symptom structure between this and previous studies is emphasized, but the possible role of cultural homogeneity in explaining different results with regard to teachers' ratings of symptoms is suggested.

XXXX in Icelandic schoolchildren: assessment with the Attention Deficit/Hyperactivity Rating Scale-IV.

@entity1 :: ('9606', 'Species') :: ['children', 'Boys', 'girls', 'boys'] @entity71 :: ('MESH:D001289', 'Disease') :: ['ADHD', 'Attention Deficit/Hyperactivity Disorder'] @entity195 :: ('MESH:D000544', 'Disease') :: ['AD']
@entity71 :: (MESH:D001289,Disease) :: ['Attention-Deficit/Hyperactivity symptoms']
