sirt (version 0.31-20)

pgenlogis: Calculation of Probabilities in Generalized Logistic Item Response Models

Description

Calculation of probabilities in the generalized logistic item response model

Usage

pgenlogis(x, alpha1 = 0, alpha2 = 0)

Arguments

x

Vector

alpha1

Upper tail parameter $\alpha_1$ in the generalized logistic item response model. The default is 0.

alpha2

Lower tail parameter $\alpha_2$ parameter in the generalized logistic item response model. The default is 0.

References

Stukel, T. A. (1988). Generalized logistic models. Journal of the American Statistical Association, 83, 426-431.

Examples

pgenlogis( x=c(-.3 , 0 , .25 , 1 ) , alpha1=0 , alpha2= .6 )
##   [1] 0.4185580 0.5000000 0.5621765 0.7310586