Effectiveness is the capability of producing a desired result. When something is deemed effective, it means it has an intended or expected outcome, or produces a deep, vivid impression.
The average newborn sleeps about 16 hours a day, but some need much less sleep and some much more. Also, it's not uncommon for a newborn's sleep pattern to change from day to day; he may sleep substantially less than usual one day and then catch up by sleeping more the following day.
Newborn Babies. Full-term, healthy newborns (or infants up to about three months old) should spend the better part of a 24-hour day sleeping. Specifically, they should sleep a total of 14 to 17 hours per 24-hour day. Of course, these hours arenât consecutive. During the first months of life, a baby will sleep no longer than two to four hours at a time, because of other pressing needs, such as feeding. Typically, a baby should clock eight to 12 hours of sleep at night (with intervals of awakenings for feedings) and accrue the rest by taking two to five naps during the day.