Intellectual Disability

Intellectual Disability (also called Developmental Intellectual Disability) is diagnosed when a person struggles in two specific areas: intellectual functioning and adaptive functioning. Intellectual functioning (such as general learning and problem solving) is measured using a standardised assessment tool, such as the Wechsler Intelligence Scale for Children (WISC-V). Adaptive functioning (such as communication, independent living, and social skills) is measured using a standardised assessment tool with the support of a main caregiver (such as a parent) and/or a teacher. An intellectual disability is diagnosed when both areas are significantly delayed (i.e., approximately two standard deviations below the average for a person that age).