How might family size affect household budgeting from an evolutionary game theoretic perspective?
How could the number of children in a family exert pressure on the parents to determine household spending? I am looking for answers which might be counter-intuitive, possibly affecting fertility rates and also the calorific value of food purchases. A game theoretic approach might be helpful.

having large family can affect the budgets of parents, you cannot always get what you want because you have a large amount of family, you need to share rooms with your brothers or sisters.
you need to buy cheaper food which might mean unhealthier?
kids might not want big families when they grow up
your’re using too big words, im confused :S cant you change some of the words ( counter-intuitive?)
anyway hope those two ideas were helpful xD