title: Comparability and reliability of paper- and computer-based measures of psychosocial constructs for adolescent physical activity and sedentary behaviors.
abstract: This study assessed the comparability and reliability of paper-based and computer-based administration of psychosocial construct measures related to adolescents engaging in physical activity and sedentary behaviors. Adolescents (n = 76; 55% girls, 49% Hispanic, 18% non-Hispanic-white; M age = 13 years) completed measures of behavior change strategies, self-efficacy, decisional balance, family and peer influences, enjoyment, activity choices, and environmental influences. Overall, the adolescents provided equivalent responses on paper and computer formats. Reliability estimates were generally good for the multiple-item constructs, but single-item measures tended to demonstrate low reliability. Average scale internal consistency was significantly higher for measures administered with the computer format compared to the paper format, but test-rest reliability estimates were not significantly different between formats.
authors.affiliation: Department of Family and Preventive Medicine, University of California, San Diego, La Jolla 92093, USA. gnorman@ucsd.edu
authors.forename: Gregory J
authors.initials: GJ
authors.lastname: Norman
authors.forename: James F
authors.initials: JF
authors.lastname: Sallis
authors.forename: Ronnesia
authors.initials: R
authors.lastname: Gaskins
mesh_terms: D000293:Adolescent; D000294:Adolescent Behavior / Q000523:psychology*; D002648:Child; D003625:Data Collection / Q000295:instrumentation* / Q000379:methods; D005260:Female; D006306:Health Surveys; D006801:Humans; D008019:Life Style; D008297:Male; D009043:Motor Activity; D010209:Paper; D015203:Reproducibility of Results; D014584:User-Computer Interface