Comparing norming methods performance under violation of the assumptions

Different norming methods provide different precision levels norm estimates, under different conditions of particular sample size, violations of normality and homoscedasticity. The quality of the norms was estimated with multiple indexes such as …

Parallel Analysis: Determining the Dimensionality of Data

1 WHAT IS PARALLEL ANALYSIS 2 METHODOLOGY 3 PARALLEL ANALYSIS IN R Recently, my colleague asked me to review a state assessment tech report. In the tech report, a section-“Parallel Analysis” really caught my eyes. I have done parallel analysis multiple times in the past. However, I have never thought about this topic in a systematical way. It is always a good memory refreshing opportunity. Therefore, I take this tech report reviewing opportunity to dig down the parallel analysis.

How much can we gain from collateral information for subscore reporting?

Factor invariance between genders on the Wechsler Intelligence Scale for Children–Fifth Edition

This study investigated the factorial invariance of the Wechsler Intelligence Scale for Children-Fifth Edition (WISC-V) between samples of male and female children. A higher-order 5-factor model was tested on a nationally-representative sample of …

Cross-Cultural Measurement Equivalence of the WISC5

A comparison of clinical classification accuracy using CDM and MIRT

Item Pool Design for Constrained CAT with Non-standard Normal Distributions