Swaddling a newborn can become more difficult than folding the perfect origami at times. Not all babies like to be bundled this tightly. For some, it's just too hot and confining; others find it delightfully reassuring. Swaddling limits movement, however, so it's best only for young infants.

Security objects are used by toddlers to relieve tension and anxiety. They are usually soft, cuddly things, like a blanket, a diaper, or fuzzy teddy bear -- something that a baby can hold close to his nose and his mouth. Children seem to need them most when they are going to sleep or visiting new places, or when they are away from their parents.

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