pairwise.SepRel {pairwise}

Person Separation Reliability

Description

This function calculates an Index of Person Separation, that is the proportion of person variance that is not due to error.

Usage

pairwise.SepRel(pers_obj, na.rm = TRUE)

Arguments

pers_obj

an object of class "pers" as a result from function pers.

na.rm

a logical evaluating to TRUE or FALSE indicating whether NA values should be stripped before the computation proceeds.

Details

none

Value

An object of class c("pairwiseSepRel","list").

References

Andrich, D. (1982). An index of person separation in latent trait theory, the traditional KR.20 index, and the Guttman scale response pattern. Education Research and Perspectives, 9(1), 95–104.

Examples

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data(bfiN) # loading reponse data
pers_obj <- pers(pair(bfiN))
result <- pairwise.SepRel(pers_obj)
result
str(result) # to see whats in ;-)
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