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 (ESCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: Issue: 78
  • Publication Date: 2018
  • Doi Number: 10.14689/ejer.2018.78.4
  • Journal Name: EURASIAN JOURNAL OF EDUCATIONAL RESEARCH
  • Journal Indexes: Emerging Sources Citation Index (ESCI), Scopus, TR DİZİN (ULAKBİM)
  • Page Numbers: pp.67-86
  • Hacettepe University Affiliated: Yes

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.