CHILD DEVELOPMENT PEDAGOGY

Detailed explanation-1: -Severe mental retardation is defined by a tested IQ of between 20 to 25 and 35 to 40. Profound mental retardation is defined by a tested IQ of less than 20 to 25. Approximately 70% of cases of severe to profound mental retardation have a known cause.

Detailed explanation-2: -Profound intellectual disability Persons with profound ID have IQ less than 20–25 (8, 13, 15, 16). Persons with profound ID function at about 3 years of mental age and need high intensity, pervasive support across all environments (8, 10, 15, 16).

Detailed explanation-3: -The terms mild, moderate, severe and profound may be used to describe the severity of a person’s intellectual disability.

Detailed explanation-4: -The DSM-IV classifies mental retardation into four stages based on severity: mild (IQ score of 50-55 to approximately 70), moderate (IQ score of 30-35 to 50-55), severe (IQ score of 20-25 to 35-40), and profound (IQ score of less than 20-25).

Detailed explanation-5: -Intellectual disability is the most common developmental disability. According to the American Association of Intellectual and Developmental Disabilities, an individual has intellectual disability if he or she meets three criteria: IQ is below 70-75.