Item response theory for scores on tests including polychotomous items with ordered responses

Valerie S. Williams; David M. Thissen; M Pommerich; K Billeaud; Valerie S. Williams

Item response theory for scores on tests including polychotomous items with ordered responses

Thissen, D. M., Pommerich, M., Billeaud, K., & Williams, V. S. (1995). Item response theory for scores on tests including polychotomous items with ordered responses. Applied Psychological Measurement, 19(1), 39-49.

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