Screening and assessment for intellectual disability are important steps in identifying and diagnosing the condition in individuals. Screening is typically the first step in the process, and involves the use of standardized tests to identify individuals who may have intellectual disability and require further assessment.

There are many different screening tests that can be used to identify individuals with intellectual disability, including the following:

The Mullen Scales of Early Learning: This is a standardized test that is used to assess the cognitive, motor, and language development of children from birth to 66 months of age.

The Bayley Scales of Infant and Toddler Development: This is a standardized test that is used to assess the cognitive, language, motor, and social-emotional development of children from 1 month to 42 months of age.

The Wechsler Preschool and Primary Scale of Intelligence: This is a standardized test that is used to assess the cognitive abilities of children from 2 years 6 months to 7 years 7 months of age.

Once an individual has been identified as potentially having intellectual disability through screening, further assessment is necessary to confirm the diagnosis and determine the type and severity of the condition. This may include a thorough medical evaluation, including a physical examination and imaging studies, as well as a comprehensive assessment of the individual's cognitive, adaptive, and behavioral functioning.

It's important to note that the screening and assessment process for intellectual disability is ongoing and may be repeated over time as the individual grows and develops. This can help to ensure that the individual receives the appropriate support and interventions to help them reach their full potential.