Modelling change in cognitive understanding with finite mixtures

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Psychological theories often posit the existence of several different states. Individuals are viewed as belonging to one of the states at a given age, but with development pass to another state. A main problem in evaluating such theories is representing the transition from one state to another over age. A stochastic transition framework is proposed which should be useful in many different settings. The model is illustrated with data from a cognitive development task.

Keywords: Cognitive development; EM algorithm; Markov processes; Mixture distributions

Document Type: Original Article


Affiliations: Pennsylvania State University, University Park, USA

Publication date: January 1, 2001

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