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Recently,an American study   involving   112 babies found babies learned better when they were   sitting up  .The babies appeared to learn well whether they were sitting up on their own,sitting in seats or   assisted   to sit up.The researchers say keeping that kind   [MASK]   had what they called a   significant   effect on the babies' ability to learn about objects.They say the body position may be linked to development in the   brain  .One   researcher   says babies can pay more attention to   exploring   an object if they do not have to be  worried  about their balance.