Test-retest reliability of self-estimated intelligence: temporal stability over four time periods

Sharon Mary Cruise, Christopher Alan Lewis, Conor Mc Guckin

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


Whilst there is a growing interest in self-estimated intelligence, to date only one study has examined the temporal stability of self-estimated intelligence. A sample of 228 third level students from Northern Ireland and the Republic of Ireland completed self-ratings of overall IQ and 10 domains of intelligence over 4 time periods. Although there were increases in mean scores over time, t tests indicated that these were rarely significant. Significant positive correlations, ranging from moderate to strong, were also observed for all intelligences over the 4 time periods. These data suggest that whilst self-estimated intelligence is for the most part stable over time, there is a trend for scores to increase. Methodological limitations of this study are discussed.

Original languageEnglish
Pages (from-to)1179-1188
Number of pages10
JournalSocial Behavior and Personality
Issue number10
Publication statusPublished - 1 Jan 2006
Externally publishedYes


  • Intelligence
  • IQ
  • Ireland
  • Self-estimated intelligence
  • Temporal stability
  • Test-retest


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