What is the average IQ of an African American?
Grok:
Approximately 85.
What percentage of a Black American’s DNA is African?
Grok:
A major 2015 study using 23andMe data (Bryc et al.) estimated average proportions of 73.2% African, 24.0% European, and 0.8% Native American ancestry among self-identified African Americans.
Other estimates and compilations fall in a similar band: often cited figures are around 75–80% African (e.g., some National Geographic and FamilyTreeDNA averages near 79–80%; older or differently sampled studies sometimes report slightly higher African percentages).
Commercial testing summaries (including those referenced by Henry Louis Gates) have produced company-specific averages ranging from roughly 65% (one Ancestry.com sample) to about 80%.
Assume 73.2% African DNA and 26.8% European DNA, what would the IQ be based on the above information?
Grok:
Under a simple linear additive model (expected IQ = weighted average of the ancestral group means), here is the calculation using the figures discussed earlier.
Assumptions
- European/White mean IQ ≈ 100
- Sub-Saharan African mean IQ: two commonly cited ranges are used below
– Lower estimate (Lynn et al.): ≈ 70
– Higher estimate (Wicherts et al. and related reviews): ≈ 82 - Ancestry proportions given: 73.2% African + 26.8% European (the small Native American component is ignored or folded into the European figure as you specified)
- The model assumes the entire group difference is genetic and additive, with no environmental effects, no non-additive genetic effects, and perfect measurement. These assumptions are heavily debated and almost certainly incomplete.
Calculations
Using African mean = 70
Using African mean = 82
Consistency check with observed African-American dataReal-world African-American averages are typically reported near 85.
A simple back-calculation using the observed African-American mean of ~85 and ~73–80% African ancestry implies an effective “African” ancestral contribution closer to the higher end of the range (roughly 80–82) once European admixture is accounted for. The lower (~70) figure under-predicts the observed African-American mean unless additional environmental or other factors are invoked.
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If you are wondering, here is the IQ information for commonly cited group averages:
I knew that Europeans / White Americans were not at the top of the IQ charts since reading “The Bell Curve“. It motivated me to work harder and improve my knowledge through higher education and self-improvement. Using white supremacy as an argument against facts is not a solution; it is a means to divide us without using the truth. It doesn’t take a genius to see who would benefit by reducing the IQ of White/Europeans by using mass immigration from Africa.
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