SepRel_1.0.1 {whomds}

Separation Reliability: Person Separation Reliability

Description

Copied from eRm::SepRel(), v1.0-1: This function calculates the proportion of person variance that is not due to error. The concept of person separation reliability is very similar to reliability indices such as Cronbach's alpha.

Usage

SepRel_1.0.1(pobject)

Arguments

pobject

Object of class ppar (see ?eRm::person.parameter).

Details

See full documentation at https://www.rdocumentation.org/packages/eRm/versions/1.0-1/topics/Separation%20Reliability

Value

SepRel returns a list object of class eRm_SepRel containing:

sep.rel

the person separation reliability,

SSD.PS

the squared standard deviation (i.e., total person variability),

MSE

the mean square measurement error (i.e., model error variance).

Author(s)

Original code by Adrian Brügger ([e-mail]), adapted by Marco J. Maier in package eRm v1.0-1

References

Wright, B.D., and Stone, M.H. (1999). Measurement essentials. Wide Range Inc., Wilmington. (https://www.rasch.org/measess/me-all.pdf 28Mb).