Developmental Delays

There are several kinds of developmental delays a child may experience, some of which have biological causes, others may be environmental in nature. Such delays can be grouped into mental, physical, behavioral and speech.

  • Mental (or cognitive) delay is related to intellectual function and learning disabilities but also affect communication and interaction. It can be caused by brain injury or chromosomal disorder.
  • Physical delays can cause the slow development of motor skills, either coordination of the large muscle groups – arms and legs, or small muscle – the hands and fingers. Genetic conditions may also play a part here.
  • Behavioral delays can affect social and emotional processes. They may result from autism spectrum disorder and attention deficit hyperactivity disorder. They will affect a child’s ability to learn and interact.
  • Finally, speech development delays can be a sign of several other developmental deficiencies or can result from them. They may also result from either physiological causes or environmental.


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