Physical - Child without intelligence deficit seems to learn to crawl, sit up and start to talk. Child with an intelligence deficit has trouble sitting up and other motor problems like starting to walk. If an infant cannot sit up or even attempt to scoot this could be a sign of motor skill problems.
Language - Child without intelligence deficit seems to learn to ...
How infant development is effected physically, cognitively, and psychosocially. Language is also important. This is dealing with intelligence deficits.