The impacts of pure sex preference and differential earnings opportuni
ties by gender on investments in children are modelled with altruism.
If bequest constraints do not bind human investments are privately eff
icient, with the higher-earning gender receiving more education. Educa
tion does not depend on parental wealth. The gender differential in be
quests is ambiguous, however, even in this case. When bequest constrai
nts bind education may depend on wealth and it is also possible for th
e gender with better earnings opportunities to get less education. The
model is tested with data from Philippine villages where bequest cons
traints are generally nonbinding. The schooling differential slightly
favors daughters. Estimated bequest behavior, however, reflects pure s
ex preference in terms of our model.