dichotomousItemParameters {DFIT}

Sets of focal and reference item parameters from Wright (2011).

Description

This data set contains the item parameters found in Wright, K. (2011). Improvements for Differential Funtioning of Items and Tests (DFIT): Investigating the addition of reporting an effect size measure and power Unpublished doctoral dissertation). Georgia State University, USA.

Usage

data(dichotomousItemParameters)

Format

a list with 'focal' and 'reference' elements. Each is a matrix 1 row per item by 3 columns: item discrimination, difficulty and guessing parameters.

Source

This data set contains the item parameters based on those found in Wright, K. (2011).

References

Wright, K. (2011). Improvements for Differential Funtioning of Items and Tests (DFIT): Investigating the addition of reporting an effect size measure and power (Unpublished doctoral dissertation). Georgia State University, USA.