When talking about fertility choice, we define the indifference
curve as the combination of number of children and consumer goods
that offer a household the same level of satisfaction. Due to
changes in preferences and benefit of children, the indifference
curve may become flatter for developed countries while it is
steeper for developing countries. In this model, what does the
slope of the indifference curve measure? Interpret why the
indifference curve is flatter for developed countries and steeper
for developing...