0.41 Helen L. Ball Elaine Hooker Peter J. Kelly, Where Will the Baby Sleep? Attitudes and Practices of New and Experienced Parents Regarding Cosleeping with Their Newborn Infants, American Anthropologist, 1999.

{ women age population female }	0.41
{ behavior social children personality }	0.11
{ university press american pp }	0.11
{ man people time told }	0.08