health practices. There is a positive relationship between national wealth and good health. The rich and industrialized countries of the world, prominently Canada, the United Kingdom, the United States, and Japan, spend a large proportion of their wealthy budget on the health care system. As, a result, their health care systems are very sophisticated, with many physicians, nurses, and other health care experts servicing the population. Thus, infant mortality is low. On the other hand, a country such as Mexico, which spends disproportionately less of its budget on healthcare, suffers from high mortality rates. This is because the general population is likely to be less healthy. In the U.S., infant mortality rates are especially high in minority groups. For instance, non-Hispanic black women have an infant mortality rate of 13.63 per 1000 live births whereas in non-Hispanic white women it was much lower at a rate of 5.76 per 1000 live births. The average infant mortality rate in the U.S. is 6.8 per 1000 live births. Babyhood Babyhood is a critical period in personality development when the foundations of adult personality are laid. In contrast toddler is used to denote a baby that has achieved relative independence, in moving about, and feeding. References External links American Academy of Pediatrics The World Health Report 2005 – Make Every Mother and Child Infant eyesight – University of Illinois Infancy hr:Novorođenče