In this paper we introduce price search decision to a life cycle model, and differentiate consumption from expenditure. The consumers with low wealth and bad income shocks search more and pay less which makes their consumption higher than a model without search option. A plausibly calibrated...

We show that standard models of intertemporal choice, including the permanent income hypothesis, imply that for any given cohort of people born at the same time, inequality in both consumption and income will grow with age. At any given date, each individual's consumption depends on the integral...