Investigation of Group Invariance in Test Equating Under Different Simulation Conditions


Inal H., ANIL D.

EURASIAN JOURNAL OF EDUCATIONAL RESEARCH, no.78, pp.67-86, 2018 (Journal Indexed in ESCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: Issue: 78
  • Publication Date: 2018
  • Doi Number: 10.14689/ejer.2018.78.4
  • Title of Journal : EURASIAN JOURNAL OF EDUCATIONAL RESEARCH
  • Page Numbers: pp.67-86

Abstract

Purpose: This study aimed to examine the impact of differential item functioning in anchor items on the group invariance in test equating for different sample sizes. Within this scope, the factors chosen to investigate the group invariance in test equating were sample size, frequency of sample size of subgroups, differential form of differential item functioning (DIF), frequency of items in the anchor test with differential item functioning, directionality of differential item functioning and mean differences in subpopulation ability levels.