1. The concept of an intertemporal price system provides the unifying framework. 2. Hence under this condition we again have intertemporal independence of portfolio decisions. 3. The concept of Walrasian Equilibrium may also be extended to incorporate intertemporal choice. 4. His research focuses on macroeconomics, intertemporal choice, behavioral economics and neuroeconomics. 5. Intertemporal trade is measured by the current account of the balance of payments.6. In these situations, the intertemporal budget constraint is effectively an equality constraint. 7. This trend probably reached its culmination with the Arrow Debreu model of intertemporal equilibrium. 8. In a competitive market, each agent makes intertemporal choices in a stochastic environment. 9. Similarities between humans and non-human animals in intertemporal choice have been studied. 10. In addition to neurotransmitters, intertemporal choice is also modulated by hormones in the brain.