To be diagnosed with an intellectual disability, which two criteria must be met?

To be diagnosed with an intellectual disability, the following two criteria must be met:

1. Deficits in intellectual functioning: This refers to difficulties with reasoning, problem-solving, planning, abstract thinking, judgment, academic learning, and learning from experience. This is often assessed with an IQ test, and a score of around 70 or below might indicate an intellectual disability.

2. Deficits in adaptive behavior: This refers to difficulties in one or more activities of daily life, such as communication, social participation, and independent living across multiple environments such as home, school, work, and community. These deficits must be present during the developmental period, meaning they are usually identified in childhood or adolescence.