There is a positive correlation between self-rated and objective intelligence measures
While some adolescent studies find little to no alignment, large-scale meta-analytic evidence demonstrates a moderate positive correlation between self-rated and objective intelligence measures.
The claim is a specific, empirical assertion about psychometric correlations. The recent meta-analysis (Paper 3) and structural modeling work (Paper 0) support a moderate positive correlation across diverse samples, whereas Paper 1 presents contrary findings in an adolescent demographic, indicating a generally supported relationship with some moderation by age and sample type.
T. Kornilova, M. Novikova. Self-assessed intelligence, personality, and psychometric intelligence: preliminary validation of a model with a selected student population. 2012. https://doi.org/10.11621/PIR.2012.0002
Paper 0 validates a structural model confirming that self-assessed intelligence is significantly related to psychometric intelligence measures.
M. Zajenkowski. How do teenagers perceive their intelligence? Narcissism, intellect, well-being and gender as correlates of self-assessed intelligence among adolescents. 2021. https://doi.org/10.1016/j.paid.2020.109978
Paper 1 found that among a sample of high-school adolescents, self-assessed intelligence was not significantly correlated with objectively measured intelligence using Raven's test.
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S. Patzl, Sandra Oberleiter, Jakob Pietschnig. Mirror, Mirror on the Wall: A Meta-Analysis on the Validity of Self-Assessed Intelligence through the Lens of the Multiverse. 2024. https://doi.org/10.3390/jintelligence12090081
Paper 3 provides a comprehensive meta-analysis of 115 independent samples demonstrating a moderate positive correlation between self-assessed intelligence and IQ.
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