Approximately 85% of the mentally retarded population is in the mildly retarded category. Their IQ score ranges from 50-70, and they can often acquire academic skills up to about the sixth-grade level. They can become fairly self-sufficient
Mental Retardation: Typical Characteristics (Please note that these are generalizations. There is a great deal of individual variation)
Individuals with mild mental retardation (formerly referred...
About 3-4% of the mentally retarded population is severely retarded. They have IQ scores of 20-40. They may master very basic self-care skills and some communication skills
In general, mentally retarded children reach such developmental milestones as walking and talking much later than children in the general population. Symptoms of mental retardation may appear at...
Could be a number of things....
1. Enviromental Toxins
2. In Utero Drug and Alcohol Exposure
3. Malnutrition
4. Brain Damage (Head Injury)
5. Poverty
6. In Utero Exposure to Diabetes
7....
About 10% of the mentally retarded population is considered moderately retarded. These people have IQ scores ranging from 35-55. They can carry out work and self-care tasks with moderate supervision