People of color also are more likely to suffer disparities in mental health treatment in general, which results in their being more likely to be ushered into the criminal justice system, says Tiffany Townsend, PhD, senior director of ethnic minority affairs in APA's Public Interest Directorate.
Units of IQ Rating. The IQ rating scale is built with a mathematical comparison of your mental age with your chronological age, and the result is multiplied by 100 for normalization. Lewis M. Terman, professor of psychology, is quoted to give IQ rating scale a mathematical name of âIntelligent Quotientâ.
Here are some numbers for IQ just as a reference. 1  An IQ that is 99.9th percentile is 147. 2  An IQ that is 99.7th percentile is 144. 3  An IQ that is 90.0th percentile is 120. 4  His claim of 156 as an IQ is 99.99th percentile, which would mean he is 1 in 10,000.