Developmental DelayDevelopmental delay is the failure to acquire at a particular age, in a particular field of development (physical, emotional, cognitive or social), that particular level of ability which the majority of children of comparable age are expected to have acquired. The degree of delay varies from borderline to severe.
Manual of Developmental Paediatrics-The Hong Kong Society of child Neurology & Developmental Paediatrics1996 Child Development: Diagnosis and Assessment-Holt K S 1991 Useful link: www.aap.org/healthtopics/stages.cfm#inf
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