title: Psychometric Validation of the Revised Family Affluence Scale: a Latent Variable Approach.
abstract: The aim was to develop and test a brief revised version of the family affluence scale. A total of 7120 students from Denmark, Greenland, Italy, Norway, Poland, Romania, Scotland and Slovakia reported on a list of 16 potential indicators of affluence. Responses were subject to item screening and test of dimensionality. Bifactor analysis revealed a strong general factor of affluence in all countries, but with additional specific factors in all countries. The specific factors mainly reflected overlapping item content. Item screening was conducted to eliminate items with low discrimination and local dependence, reducing the number of items from sixteen to six: Number of computers, number of cars, own bedroom, holidays abroad, dishwasher, and bathroom. The six-item version was estimated with Samejima's graded response model, and tested for differential item functioning by country. Three of the six items were invariant across countries, thus anchoring the scale to a common metric across countries. The six-item scale correlated with parental reported income groups in six out of eight countries. Findings support a revision to six items in the family affluence scale.
authors.affiliation: Department of Psychosocial Science, University of Bergen, Postbox 7800, 5020 Bergen, Norway.
authors.forename: Torbjørn
authors.initials: T
authors.lastname: Torsheim
authors.affiliation: Department of Public Health and Pediatrics, University of Turin, Turin, Italy.
authors.forename: Franco
authors.initials: F
authors.lastname: Cavallo
authors.affiliation: NHS Greater Glasgow & Clyde, Public Health Directorate, Glasgow, G12 0HX UK.
authors.forename: Kate Ann
authors.initials: KA
authors.lastname: Levin
authors.affiliation: Department of Public Health, University of Copenhagen, Copenhagen, Denmark.
authors.forename: Christina
authors.initials: C
authors.lastname: Schnohr
authors.affiliation: Department of Child and Adolescent Health, Institute of Mother and Child, Warsaw, Poland.
authors.forename: Joanna
authors.initials: J
authors.lastname: Mazur
authors.affiliation: National Institute of Public Health, University of Southern Denmark, Odense, Denmark.
authors.forename: Birgit
authors.initials: B
authors.lastname: Niclasen
authors.affiliation: School of Medicine, Medical & Biological Sciences, University of St. Andrews, Scotland, UK.
authors.forename: Candace
authors.initials: C
authors.lastname: Currie
keywords: Adolescence; FASIII; HBSC; Measurement; SES