Showing posts with label Signaling. Show all posts
Showing posts with label Signaling. Show all posts

Monday, May 4, 2009

Incentives matter. That is central to economics. It also is important for political economy

TO BE NOTED: From EconLog:

"
More Thoughts on Masonomics
Tyler and Alex have new textbooks on micro and macro. Both begin with the same anecdote.

In 1787, the British government had hired sea captains to ship convicted felons to Australia...On one voyage, more than a third of the males died and the rest arrived beaten, starved, and sick...

Instead of paying the captains for each prisoner placed on board ship in Great Britain, the economist suggested paying for each prisoner that walked off the ship in Australia. In 1793, the new system was implemented and immediately the survival rate shot up to 99 percent.

That is economics on one foot--incentives matter.

What to do, then, about macroeconomics? In crude Keynesian economics, incentives do not matter. Consumption depends on income, investment depends on animal spirits, and prices have no impact. Much of the post-Keynesian synthesis has been devoted to bringing incentives back into the picture. The results have satisfied neither hard-core microeconomists nor hard-core Keynesians. Tabarrok and Cowen devote some space to Real Business Cycle theory, which is all about incentives. They also devote some space to the sticky-price version of New Keynesianism, in which incentives are combined with imperfect price flexibility.

I think a more promising approach is to look at the macroeconomic impact of signaling. Workers view wage rates as signals of their employer's long-term commitment to their welfare. Thus, a wage cut is a particularly negative signal, and it is difficult to cut wages in a downturn without causing major problems. See Lectures on Macroeconomics, number 4.

Also, as I have been arguing in recent posts, financial markets depend crucially on signaling. Perfect transparency in financial intermediation is impractical--if you can see through the intermediary you could have done without the intermediary and invested yourself. Thus, investorrs necessarily rely on signals when dealing with financial intermediaries. Under those circumstances, it is easy for confidence to fluctuate. We saw in recent years that there was extreme over-confidence in the financial engineering related to home mortgages. Now that confidence is gone. When confidence is high, financial intermediaries enlarge their balance sheets and economic activity expands. See lecture number 9.

So, here are some thoughts on Masonomics in general.

1. Incentives matter. That is central to economics. It also is important for political economy--Masonomics uses public choice, which says that government officials, rather than acting as benevolent omniscient stewards, respond to incentives.

2. Signaling matters. It matters in education, health care, finance, politics, marketing, and personal relationships. I would suggest that if there is to be a Masonomics perspective on macro, then signaling should be central.

3. Institutions matter. Formal and informal rules shape economic behavior, for better or worse. For example, differences across countries in the standard of living are determined largely by institutions.

4. Evolution matters. When others see a lack of planning or central direction as chaos, Masonomists see Hayek's spontaneous order. A system of decentralized trial-and-error decisions works better than many people realize. Central regulation works less well than many people expect."

Friday, March 20, 2009

The opportunity for "just-so" stories strikes me as too great.

TO BE NOTED: From EconLog:

"In Be the Solution, Michael Strong writes (p. 66-69),

Are altruists occupationally prone to anger? Well,, it turns out that they are, in fact, biologically inclined to be angry and punitive toward those who they perceive to be not being helpful.

Evolutionary psychologists believe that status is correlated with perceived community altruism because in part it was in our evolutionary interest to prevent free riders...

we are willing to punish those who do not contribute to collective action even at a cost to us, another finding that is inconsistent with rational choice...

Thus, the very fact that we have moral impulses to support the public good is necessarily intertwined with the facdt that we have moral impulses to punish those who do not (and to punish those who do not punish those who do not, and so on)...

This instinct is especially harmful when used to punish those who are perceived not punishing free riders. This is the source of the bigotry against market economics among the do-gooders: It is believed that those who describe the positive outcomes of free enterprise are not doing their job to behave punitively toward free riders, and that therefore they, too, must be punished.

In other words, because economists do not want to punish rich people, altruists believe we must be punished.

But it's worse than that. You can signal that you are an altruist not by engaging in altruistic acts, but simply by expressing a desire to punish others. For example, by taking away AIG bonuses, you do a great deal to signal altruism, even though the actual social gains from taking the bonuses away are miniscule (the gains may even be negative).

This topic of signaling and deception is worth some extended remarks, below.

1. Tyler Cowen and Robin Hanson both think that signaling and deception are very important. If you listened to their bloggingheads and cannot remember anything about signaling and deception, then you need to listen again.

2. The most original idea that Robin Hanson has about health care expenditures is not that much spending is wasted--many other economists believe that. The original insight is his explanation for high spending, which is that we encourage the health care spending of others in order to show that we care. This hypothesis has the added bonus of helping to explain why so much of health care spending is paid for by "insurance."

3. I thought that the most fascinating parts of Tyler's Discover Your Inner Economist where the parts on self-deception. I wish that Tyler would do a whole book on deception and signaling. Alternatively, maybe I should do a book on Masonomics, and include a large chapter on the importance to Masonomists of deception and signaling.

4. I think that signaling and self-deception are in the back of Tyler's mind in his blogging heads with Peter Singer. (Note that Singer's debating technique is to begin by appearing to concede Tyler's points, and then to push back. I call this the "Yes, but" approach.)

5. A reason to focus on deception and signaling is that they appear to have great evolutionary survival value. Even stupid plants have evolved powerful tools for deception and signaling, looking tasty when it is helpful and looking unappetizing when that is helpful. Animals have many behaviors that are designed to deceive--think of animals that appear more fierce than they are, for example. But in all of nature, the most powerful tool for signaling and deception is the human brain.

It is plausible that a great deal of the evolution of the brain has been to make us better players of the game of deception. Think about that.

6. A lot of mating behavior involves signaling and deception.

7. A lot of political behavior involves signaling and deception.

8. Perhaps a lot of economic behavior (think of marketing and sales) involves signaling and deception.

9. As we become wealthier, perhaps signaling and deception increase. We do not have to focus as much on meeting basic needs, so we have more energy to devote to competition for status, which is mostly a matter of signaling and deception.

10. Michael Strong suggests that altruists may be particularly inclined to punish alleged free riders. But it could be that you signal altruism by showing an inclination to punish. You don't necessarily have to be an altruist if you want to take away AIG bonuses. You could be very selfish, but coming out against AIG bonuses is a cheap way to signal your altruism.

11. On the other hand, what is being signaled by those who are skeptical of taking away AIG bonuses?

12. I am not as comfortable as other Masonomists are with using signaling explanations. The opportunity for "just-so" stories strikes me as too great. "Counter-signaling" seems to me to take signaling completely out of the realm of testable theory and into the realm of nonfalsifiability. If a peacock growing a useless tail can be explained as a signal, then what would falsify the theory of signaling?