Ferrando, P.J., and Lorenzo, U. (2000). WPerfit: A program for computing parametric person-fit statistics and plotting person response curves. Educational and Psychological Measurement, 60, 3, 479-487.
Ferrando, P.J., and Lorenzo, U. (2000). WPerfit: A program for computing parametric person-fit statistics and plotting person response curves. Educational and Psychological Measurement, 60, 3, 479-487.