Such mothers were less sensitive to their toddlers at age one, and had less inquisitive children at age two.
A study published in the New York Times showed working mothers were less likely to experience sadness, anger and diagnosed depression.
In those countries, mothers were less likely to be physically depleted by having too many babies in too short a time.
But Disney also said that its research indicated that mothers were less interested than they used to be in programs that promote academic goals.
Ms Goisis, heading up the research published in the journal Biodemography and Social Biology, also said older mothers were less likely to smoke, more likely to breastfeed and more likely to read to their children.
Others involved how flexibly children interpreted gender roles: several studies, for example, found that the sons and daughters of lesbian mothers were less likely to have stereotyped notions of masculine and feminine behavior and more likely to aspire to occupations that crossed traditional gender lines.
Re "The Triumph of the Working Mother," by Stephanie Coontz (Sunday Review, June 2), about a report finding that stay-at-home mothers were less happy than their employed counterparts: Curiously, there is one myth essential to the mommy wars debate that goes unchallenged: that paid work outside the home is always interesting and unpaid work in the home never is.
Women with educated mothers were less likely to demand for abortion with a marginal effect of approximately −0.15.
Māori (OR = 0.66), Pacific (OR = 0.60) and Asian (OR = 0.37) mothers were less likely than European mothers to be very satisfied with their child's care.
Māori, Pacific and Asian mothers were less likely than those of European ethnicity to be very satisfied with their child's care.
Compared to non-WIC mothers, WIC mothers were less likely to usually or always place their infants in supine sleeping positions [RR = 0.81 (95% CI: 0.80, 0.81)].
