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IQ Scores as an Indicator for Intellectual Disability
Based on the normal distribution of intelligence, only about 2.2% of the population has an IQ score below 70. A score of 70 represents two standard deviations below the population mean of 100. While such a score is a primary indicator for a potential Intellectual Disability diagnosis, it is not sufficient on its own. A formal diagnosis also requires the presence of significant deficits in adaptive functioning, with both issues appearing before the age of 18.
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Ali, Mourad, et al. “DEFINING and DETERMINING INTELLECTUAL DISABILITY (INTELLECTUAL DEVELOPMENTAL DISORDER): INSIGHTS from DSM-5.” International Journal of Psycho-Educational Sciences |, vol. 8, no. 1, 2019, p. 52, files.eric.ed.gov/fulltext/ED594326.pdf. Accessed 25 Sept. 2023.
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IQ Scores as an Indicator for Intellectual Disability
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