The GCOS is available in two forms. The original scale is well validated and has been widely used consists of 12 vignettes and 36 items. Each vignette describes a typical social or achievement oriented situation (e.g., applying for a job or interacting with a friend) and is followed by three types of responses–an autonomous, a controlled, and an impersonal type. A description of the 12-vignette version of the scale construction appears in Deci and Ryan (1985) along with data that support the instrument’s reliability and validity. Respondents indicate, on 7-point Likert-type scales, the extent to which each response is typical for them. Higher scores indicate higher amounts of the particular orientation represented by the response.
Year: 1985 Authors: Edward Disease: Obesity Outcome: Self-efficacy
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Measure: Self-efficacy
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Number of RCTs that used this tool (in our study): 1
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Scale: Higher scores are better Reference: Deci, E. L., & Ryan, R. M. (1985). The general causality orientations scale: Self-determination in personality. Journal of research in personality, 19(2), 109-134.
Target population: General population Focus Generic Translations available: Yes Original version validated: Yes Original language: English Form of delivery: Self-reported Licence needed: Unclear 10.1016/0092-6566(85)90023-6