Chunk #15 — Some general methodological considerations — Selection of symptoms or questionnaire items — Response scale of the items

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Does nature have joints worth carving? A discussion of taxometrics, model-based clustering and latent variable mixture modeling.

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structure, then the results could be very different because the ATBRS neglects the gradual differences at the lower end of the normal distribution that are detected with the SWAN (Hay et al. 2007). If the response format of the observed items does not tap into the gradual differences of scale, then we cannot expect that the latent construct that is inferred from the observed measurements will reflect such differences.