title: Assessment of physical self-concept in adolescents with intellectual disability: content and factor validity of the very Short Form of the Physical Self-Inventory.
abstract: The purpose of this study was to test the factor validity and reliability of the Very Short Form of the Physical Self-Inventory- (PSI-VSF) within a sample of adolescents with mild to moderate Intellectual Disability (ID). A total of 362 ID adolescents were involved in two studies. In Study 1, the content and format scale response of the PSI-VSF were adapted for adolescents with ID. This instrument was thus renamed PSI-VSF-ID and two versions with two alternative responses scales format, were developed: Likert and graphical. In Study 2, results provided support for: (1) the factorial validity and reliability; and (2) factorial invariance across gender, age, type of school placement and ID level of the PSI-VSF-ID associated with a graphical response scale format.
authors.affiliation: UMR 6233 Institute of Movement Sciences, Etienne-Jules Marey, CNRS-University of Aix-Marseille II, Marseille, France. christophe.maiano@univmed.fr
authors.forename: Christophe
authors.initials: C
authors.lastname: Maïano
authors.forename: Jérôme
authors.initials: J
authors.lastname: Bégarie
authors.forename: Alexandre J S
authors.initials: AJ
authors.lastname: Morin
authors.forename: Grégory
authors.initials: G
authors.lastname: Ninot
mesh_terms: D000293:Adolescent; D000367:Age Factors; D002648:Child; D005163:Factor Analysis, Statistical; D005260:Female; D006801:Humans; D008607:Intellectual Disability / Q000523:psychology*; D007360:Intelligence; D007361:Intelligence Tests; D008297:Male; D010555:Personality Inventory; D011569:Psychiatric Status Rating Scales; D015203:Reproducibility of Results; D012649:Self Concept; D012720:Severity of Illness Index; D012737:Sex Factors; D011795:Surveys and Questionnaires