Global developmental delay

older children where formal assessment possible

• A. Deficits in intellectual functions (reasoning, problem-solving, planning, abstract thinking, judgement, academic learning, experiential learning) confirmed by clinical assessment and standardised testing
• B. Deficits in adaptive functioning in ≥1 of: conceptual, social, or practical domains — resulting in failure to meet developmental/sociocultural standards for personal independence/social responsibility
• C. Onset of intellectual and adaptive deficits during the developmental period