An evaluation and shortening of the Cooking and Food Provisioning Action Scale (CAFPAS) using item response theory

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dc.contributor.authorKarlsson, Simonen
dc.contributor.authorHarris, Kathryn L.en
dc.contributor.authorMelin, Jeanetteen
dc.contributor.authorLahne, Jacoben
dc.contributor.authorWolfson, Julia A.en
dc.contributor.authorCollier, Elizabeth S.en
dc.date.accessioned2023-08-03T14:39:25Zen
dc.date.available2023-08-03T14:39:25Zen
dc.date.issued2023-05en
dc.description.abstractThe Cooking and Food Provisioning Action Scale (CAFPAS) is a 28-item validated tool for measuring food agency, a latent construct representing an individual's ability to make and achieve food-preparation and -pro-visioning goals. Here, key measurement parameters (targeting, threshold ordering, item fit, unidimensionality, differential item functioning, local dependency, and person reliability) of the CAFPAS are evaluated using a specific case of item response theory, Rasch analysis, on data from a development sample (N = 1853; 910 from Sweden; 943 from the US). Winsteps (v.5.1.7) is used for this analysis. The similarity of the Swedish version of the CAFPAS to the original is also assessed. Based on an iterative assessment of the measurement properties with different combinations of items in the development sample, ways to shorten the CAFPAS without jeopardizing construct validity or person reliability are examined. After removing items that do not fit the Rasch model, or that appear redundant in relation to other items, an 11-item version (CAFPAS-short) is suggested and tested using further Rasch analysis on both the development sample and an additional US-based validation sample (N = 1457). Scores of cooking confidence and attitudes are then modelled with measures from the CAFPAS and CAFPAS-short using frequentist and Bayesian analysis. Results suggest that the CAFPAS-short performs similarly to the full-length version, and potential future improvements to the CAFPAS are discussed. This study represents a successful application of item response theory to investigate and shorten a psychometric scale, reducing cognitive load on participants in studies using the CAFPAS whilst minimizing loss of data reliability.en
dc.description.notesSK, KLH, JM, and ESC were supported by the RISE competence platform Centre for Categorical Based Measurements. KLH and ESC were supported by FORMAS-Research Council for Environment, Agricultural Sciences and Spatial Planning, grant number 2018-01867. JAW was supported by the National Institutes of Diabetes and Digestive and Kidney Diseases of the National Institutes of Health (NIH) , grant number K01DK119166.en
dc.description.sponsorshipRISE competence platform Centre; FORMAS-Research Council for Environment, Agricultural Sciences and Spatial Planning [2018-01867]; National Institutes of Diabetes and Digestive and Kidney Diseases of the National Institutes of Health (NIH) [K01DK119166]en
dc.description.versionPublished versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.doihttps://doi.org/10.1016/j.foodqual.2023.104880en
dc.identifier.eissn1873-6343en
dc.identifier.issn0950-3293en
dc.identifier.other104880en
dc.identifier.urihttp://hdl.handle.net/10919/115974en
dc.identifier.volume108en
dc.language.isoenen
dc.publisherElsevieren
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectCooking abilityen
dc.subjectFood agencyen
dc.subjectItem response theoryen
dc.subjectCategorical measurementen
dc.subjectPsychometricsen
dc.titleAn evaluation and shortening of the Cooking and Food Provisioning Action Scale (CAFPAS) using item response theoryen
dc.title.serialFood Quality and Preferenceen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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