It Captures Your Mind by Cass R. Sunstein | The New York Review of Books

"Because they lack money, poor people must focus intensely on the economic consequences of expenditures that wealthy people consider trivial and not worth worrying over. Those without a lot of time have to hoard their minutes, and they may have trouble planning for the long term. The cash-poor and the time-poor have much in common with lonely people, for whom relationships with others are scarce. When people struggle with scarcity, their minds are intensely occupied, even taken over, by what they lack."