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.
Classifying Low IQ Scores. The average score on most IQ tests is 100, and approximately 68 percent of all people score somewhere between 85 and 115. For those who fall below 85, scores are often classified in the following way: 1 to 24 - Profound mental disability. 25 to 39 - Severe mental disability.