How Many Types Of Mental Retardation Are There?
How Many Types Of Mental Retardation Are There? Mental retardation comprises five general categories: borderline, mild, moderate, severe and profound. What is the most common level of mental retardation? The incidence is 1% of the population, with a male preponderance. Most affected individuals have mild mental retardation (IQ of 50 to 70). Moderate mental retardation