Donald Luskin writes in the Wall Street Journal:

The global economy is slipping into recession. The evidence is showing up in all the usual ways: slowing output growth, slumping purchasing-manager indexes, widening credit spreads, declining corporate earnings, falling inflation expectations, receding capital investment and rising inventories. But this is a most unusual recession– the first one ever caused by falling oil prices.

A drop in oil prices means less money in the hands of oil producers but more money in the hands of oil consumers. Currently the U.S. is importing about 5.1 million barrels a day more than we’re exporting of crude oil and petroleum products. At $100 a barrel, that had been a net drain on the U.S. economy of $190 billion each year. That drain that will now be cut by more than half by falling oil prices.

We usually see consumers spend their extra income right away, whereas it takes more time for producers to alter their spending plans. As a result, even if the U.S. was not a net importer of oil, we might still expect to see a short-run positive stimulus from dropping oil prices. The actual change in overall consumption spending in response to the oil price decline through March of last year was about 0.4% smaller than would have been predicted on the basis of the historical correlations.

But we see something different when we look at the behavior of individual consumers. A study by the JP Morgan Chase Institute compared the response to lower gasoline prices of people who had previously been buying a lot of gasoline with the responses of people who had been buying relatively little. They found that the first group increased spending relative to the second, with the magnitude of the difference in spending between the two groups consistent with the claim that consumers spent almost all of their windfall. The conclusion I draw from the seemingly conflicting evidence in the macro and micro data is that each consumer spent more than they would have if oil prices had not fallen, but that there were other macro headwinds at the same time that were offsetting some of the positive stimulus of falling oil prices.