The quality of life of normally achieving and low-achieving participants: Is it associated with IQ and metacognition?

Yasser A. Al-Hilawani*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingChapter


In this chapter, I tested the notion that performances on the IQ test, the Mooney problem checklist as a reflection of the quality of life (QoL), and metacognition were intercorrelated. It was also intended to find if there were significant differences between the normally achieving and the low-achieving participants on the Mooney scale and on the metacognitive instrument (i.e., the metacognitive test, reaction time, and the metacognitive test scores divided by mean reaction time) when controlling for the effect of influencing variables. Results revealed that only the performance of the normally achieving participants was consistent with the notion stated. The heterogeneity of the low-achieving group was presented as one of the many explanations for the lack of significant association between their performances on the three measures. Overall, participants with high IQs obtained high scores on the metacognitive test; and older participants obtained better scores on the metacognitive test and on the metacognitive test scores divided by mean reaction time compared to younger ones. The analysis showed no significant differences existed between the two participating groups in responding to items on the Mooney scale or the metacognitive instrument when controlling for influencing variables. Insights, discussions, and suggestions for future research were presented.

Original languageEnglish
Title of host publicationIntellectual Disability
Subtitle of host publicationSome International Aspects
PublisherNova Science Publishers, Inc.
Number of pages27
ISBN (Print)9781536178661
Publication statusPublished - Jun 15 2020
Externally publishedYes

ASJC Scopus subject areas

  • Medicine(all)

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