rpf (version 0.8)

science: Liking for Science dataset

Description

These data are from Wright & Masters (1982, p. 18).

Details

All items were fit to a 3 category Partial Credit Model (PCM) with standard Gauss-Hermite quadrature of 49 points using OpenMx, -2loglikelihood = 2733.3. Person scores were obtained using EAP with a 98 point flat quadrature.

References

Wright, B. D. & Masters, G. N. (1982). Rating Scale Analysis. Chicago: Mesa Press.

Examples

data(science.items)
data(science.people)