A stochastic model of response to rating scales, using the beta distribution, is developed and tested against empirical data. The effect of number of items by number of points on the sampling error of a composite scale value estimator is investigated and quantitatively formulated. An application of this formulation to arrive at optimal combinations of number of points and number of items is described.
No takes yet. Share an insight, caveat, or question.
Givon et al. (1984) studied this question.
Synapse has enriched 3 closely related papers on similar clinical questions. Consider them for comparative context: