Generalizability theory is used to assess the validity of the conceptualisation and implementation design of an evaluation programme carried out in the context of five care centres for homeless children. In order to measure the implementation process of the social intervention programme at three different observation moments, a rating scale questionnaire was developed. Crossed, three-facet random-effects designs (items × subjects × observation moments) for each care centre were analysed to develop different generalizability and decision studies and thus optimise the overall evaluation design. Given the generalizability analyses performed, the way in which generalizability results are complemented by log-linear analyses is discussed in relation to the evaluative objectives.
Quality & Quantity – Springer Journals
Published: Jul 20, 2005
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