It is the examinee's IQ

Hsinyi Chen*, Tianshu Pan, Jianjun Zhu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


In response to the question "Whose IQ is it?" raised by McDermott, Watkins, and Rhoad (2014), this study examined the same concern about assessor bias by applying hierarchical linear modeling to a large and representative standardization sample of 2,200 child records in the Wechsler Intelligence Scale for Children, Fourth Edition (WISC-IV). When differences in child age, gender, ethnicity, parental education level, and some intellectual abilities were cojointly used as covariates to adjust for nonrandom assignment problems, the results revealed that the Level 2 assessor variance was trivial for Full Scale IQ and all WISC-IV scores, ranging from 1%-5%, with the only exception being the Comprehension subtest, which showed a moderate level of between-assessor variance (10%). Evidence shows that WISC-IV scores are valid measures of children's intellectual abilities, with no evidence showing harmful assessor bias.

Original languageEnglish
Pages (from-to)1523-1527
Number of pages5
JournalPsychological Assessment
Issue number11
Publication statusPublished - 2016 Nov 1


  • Assessor variance
  • Fourth edition (WISC-IV)
  • Hierarchical linear modeling (HLM)
  • Wechsler intelligence scale for children

ASJC Scopus subject areas

  • Clinical Psychology
  • Psychiatry and Mental health


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