title: A new scale for the measurement of quality of life in children with intellectual disability.
abstract: BACKGROUND
  Children and adolescents with intellectual disabilities make up a group which is in urgent need of an adequate operationalisation of the quality of life construct, not only to improve individual personal outcomes but also to develop and implement evidence based practices. For that reason, and with the aim of answering the growing demand for an adequate evaluation instrument for this group, the KidsLife scale was developed.
  
  
  METHODS
  This research provides evidence of the reliability and validity of the scale, which is composed of 96 items spread over eight subscales, and completed by a third-party respondent. The validation sample comprised 1060 people with intellectual disability, with ages ranging from 4 to 21 years old (M=13.51; SD=5.04).
  
  
  RESULTS
  The results suggest that the eight quality of life domains assessed on the scale are reliable (Cronbach's alpha ranging from 0.812 to 0.949). The evidence of the validity of the construct provided by Confirmatory Factor Analysis also demonstrated adequate indexes of fit for the eight-domain model.
  
  
  CONCLUSIONS
  Future lines of research which may use the KidsLife Scale are suggested and discussed.
authors.affiliation: Departamento de Psicología, Universidad de Oviedo, Spain. Electronic address: gomezlaura@uniovi.es.
authors.forename: Laura E
authors.initials: LE
authors.lastname: Gómez
authors.affiliation: Departamento de Psicología, Universidad de Oviedo, Spain.
authors.forename: M Ángeles
authors.initials: MÁ
authors.lastname: Alcedo
authors.affiliation: Departamento de Psicología, Universidad de Valladolid, Spain.
authors.forename: Benito
authors.initials: B
authors.lastname: Arias
authors.affiliation: Departamento de Psicología, Universidad de Oviedo, Spain.
authors.forename: Yolanda
authors.initials: Y
authors.lastname: Fontanil
authors.affiliation: Facultad de Psicología, Universidad de Talca, Chile.
authors.forename: Víctor B
authors.initials: VB
authors.lastname: Arias
authors.affiliation: Departamento de Psicología, Universidad de Oviedo, Spain.
authors.forename: Asunción
authors.initials: A
authors.lastname: Monsalve
authors.affiliation: Instituto Universitario de Integración en la Comunidad (INICO), Universidad de Salamanca, Spain.
authors.forename: Miguel Ángel
authors.initials: MÁ
authors.lastname: Verdugo
mesh_terms: D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D005163:Factor Analysis, Statistical; D005260:Female; D006801:Humans; D008607:Intellectual Disability; D008297:Male; D011594:Psychometrics; D011788:Quality of Life; D015203:Reproducibility of Results; D055815:Young Adult
keywords: Adolescence; Assessment; Infancy; Intellectual disability; Quality of life; Test validation