Exploratory Mokken scale analysis (MSA) is a popular method for identifying scales from larger sets of items. As with any statistical method, in MSA the presence of outliers in the data may result in biased results and wrong conclusions. The forward search algorithm is a robust diagnostic method for outlier detection, which we adapt here to…

An alternative for analyzing responses to Likert Scales is proposed, using additive conjoint measurement. It assumes that subjects can report their attitudes toward stimuli in rank order. Neither within-subject nor between-subject distributional assumptions are made. Nevertheless, interval level stimulus values and response category boundaries are…

Examines intrinsic individual differences in conceptual behavior with a multivariate model, three mode factor analysis. The analyses yielded five individual difference performance factors, three stage factors, and four response components indicating the importance of a multivariate representation of complex behavior. (Author/DEP)