Birth order effects are found in empirical work, but lack theoretical foundations. Our new approach to modelling children provides this. Each child has the same genetic make-up and parents do not favour a child based on its birth order. Each child’s needs change as it grows, and births are...

Birth order effects are found in empirical work, but lack solid theoretical foundations in economics. Our new modeling approach to children provides this. Each child’s needs change as it grows, and births are sequential. Each child has the same genetic make-up and parents do not favor one...