The diagnostic category that applies to people with IQs of 20 to 30 and is about 70% of people with mental retardation. These people do not acquire any academic skills and have motor and sensory problems.
The diagnostic category that applies to people with IQs of 20 to 30 and is about 70% of people with mental retardation. These people do not acquire any academic skills and have motor and sensory problems.