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.
The distribution of IQ scores is as follows: 1  50% of IQ scores fall between 90 and 110. 2  70% of IQ scores fall between 85 and 115. 3  95% of IQ scores fall between 70 and 130.  99.5% of IQ scores fall between 60 and 1  140. A score of 132 equals the top 2  2%. A score of 134 equals the top  1%. A score of 68 equals the bottom 2%.