title: Factor structure of the Rutter Teacher Questionnaire in Portuguese children.
abstract: OBJECTIVE
  To examine the factor structure of the Rutter Teacher Questionnaire in Portuguese primary school children.
  
  
  METHODS
  The Rutter Teacher Questionnaire, a 26-item scale covering a variety of behavioral problems, was completed by teachers of 877 children, aged 6 to 11 years. Data were subjected to factor analysis using the principal components solution with varimax rotation.
  
  
  RESULTS
  The factorial analysis in total sample revealed three factors explaining 38.88% of the total variance. The factors contained items representing hyperactivity/conduct (Factor 1), anxious/depressive (Factor 2) and truancy/stealing (Factor 3). The highest correlations between factors scores were for Factor 1 and Factor 3. These Factors scores were higher in boys than girls and correlated with lower social class. All three Factors scores correlated with school performance. The comparison between separate factorial structures for the samples of boys and girls revealed a considerable overlap.
  
  
  CONCLUSIONS
  The pattern of the items contained on Factor 1 appears to be related with the category of hyperkinetic conduct disorder used by the International Classification of Diseases-10. Results suggest that the Portuguese language version of the Rutter Teacher Questionnaire possesses good psychometric properties and may be considered a useful instrument for measuring children's behavior problems.
authors.affiliation: Institute of Medical Psychology, School of Medicine, University of Aveiro, Aveiro, Portugal. pereira@fmed.uc.pt
authors.forename: Ana Telma
authors.initials: AT
authors.lastname: Pereira
authors.forename: Berta Rodrigues
authors.initials: BR
authors.lastname: Maia
authors.forename: Mariana
authors.initials: M
authors.lastname: Marques
authors.forename: Sandra Carvalho
authors.initials: SC
authors.lastname: Bos
authors.forename: Maria João
authors.initials: MJ
authors.lastname: Soares
authors.forename: Ana
authors.initials: A
authors.lastname: Gomes
authors.forename: António
authors.initials: A
authors.lastname: Macedo
authors.forename: Maria Helena Pinto de
authors.initials: MH
authors.lastname: Azevedo
mesh_terms: D019958:Attention Deficit and Disruptive Behavior Disorders / Q000175:diagnosis*; D002648:Child; D002653:Child Behavior Disorders / Q000175:diagnosis*; D005163:Factor Analysis, Statistical; D005260:Female; D006801:Humans; D008297:Male; D011174:Portugal; D011594:Psychometrics; D012959:Socioeconomic Factors; D013334:Students; D011795:Surveys and Questionnaires; D014175:Translating