Cytogenetic Evaluation of the Individual Developmental Delay or Mental Retardation

Question 1

Intellectual Disability is defined as

Answer 1

IQ

Question 2

Intellectual Disability levels:

• Mild
• Moderate
• Severe

Answer 2

Mild: IQ of 50 - 70
Moderate: IQ of 35 - 50
Severe: IQ of 20 - 35

Question 3

Global developmental delay (DD) is defined as:

Answer 3

Significant delay in two or more of the following areas: cognition, speech/language, gross/fine motor skills, social/personal skills, and daily living

DD is evidenced as age-specific deficits in learning skills and adaptation in comparison with chronological peers

The term of DD is generally reserved for children

Question 4

What is the most common cause of MR/DD

Answer 4

Chromosome abnormalities