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ERIC Number: EJ938102
Record Type: Journal
Publication Date: 2006-Dec
Pages: 15
Abstractor: As Provided
Reference Count: 32
ISBN: N/A
ISSN: ISSN-0268-1153
Using Rasch Modeling to Re-Evaluate Three Scales Related to Physical Activity: Enjoyment, Perceived Benefits and Perceived Barriers
Heesch, K. C.; Masse, L. C.; Dunn, A. L.
Health Education Research, v21 n1 pi58-i72 Dec 2006
Studies suggest that enjoyment, perceived benefits and perceived barriers may be important mediators of physical activity. However, the psychometric properties of these scales have not been assessed using Rasch modeling. The purpose of this study was to use Rasch modeling to evaluate the properties of three scales commonly used in physical activity studies: the Physical Activity Enjoyment Scale, the Benefits of Physical Activity Scale and the Barriers to Physical Activity Scale. The scales were administered to 378 healthy adults, aged 25-75 years (50% women, 62% Whites), at the baseline assessment for a lifestyle physical activity intervention trial. The ConQuest software was used to assess model fit, item difficulty, item functioning and standard error of measurement. For all scales, the partial credit model fit the data. Item content of one scale did not adequately cover all respondents. Response options of each scale were not targeting respondents appropriately, and standard error of measurement varied across the total score continuum of each scale. These findings indicate that each scale's effectiveness at detecting differences among individuals may be limited unless changes in scale content and response format are made. (Contains 3 figures and 1 table.)
Oxford University Press. Great Clarendon Street, Oxford OX2 6DP, UK. Tel: +44-1865-353907; Fax: +44-1865-353485; e-mail: jnls.cust.serv@oxfordjournals.org; Web site: http://her.oxfordjournals.org/
Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A