In recent years, neuroscientists have been able to see what happens inside the brain when people, like Sullenberger, are forced to make decisions under pressure. Though the typical assumption is that some people don't feel fear -- that they are somehow less scared than the rest of us -- that assumption turns out to be false. The fear circuits in the brain, such as the amygdala, generate their response automatically; it's almost certain that everyone on board Flight 1549 was terrified.
What, then, allows people like Sullenberger to make effective decisions in harrowing circumstances? How do they keep their fear from turning into panic? Scientists have found that the crucial variable is the ability to balance visceral emotions against a more rational and deliberate thought process, which is centered in the prefrontal cortex. This balancing act is known as metacognition -- a sort of thinking about thinking.
Pilots have a different name for this skill: They call it "deliberate calm," because staying calm under fraught circumstances requires both conscious effort and regular practice.
This is where flight simulators enter the picture. The advantage of these realistic simulators, which have been in widespread use since the early 1980s, is that they allow pilots to practice extreme flight scenarios, such as a total loss of engine power over water. The training provides pilots with important technical skills -- they can practice flying crippled planes -- but it also teaches them something more important: how to draw on an optimal blend of reason and emotion. They learn how to ignore their fear when fear isn't useful and how to make quick, complicated decisions in the most fraught situations. Flight crews don't panic because they've practiced staying calm.
Sullenberger's moment of deliberate thought probably went something like this: He needed to make a decision about where to land. He had to carefully weigh the risk of not being able to make the Teterboro airport against the risk of landing in freezing water. The decision required him to weigh numerous variables. How quickly was he losing altitude? Could he clear the George Washington Bridge? Would he be able to steer the plane without thrust? He probably had only a few seconds to consider all this information, but Sullenberger wisely realized that the Hudson was his best option.
Of course, pilots aren't the only people who are forced to act in a crisis. Soldiers must make complicated battlefield decisions; investors must choose when to sell in a sinking market; consumers must figure out how to navigate a turbulent economy.
The important lesson of US Airways Flight 1549, however, is that no matter how difficult or unprecedented the problem, we have the ability to look past our primal emotions and carefully think about how we need to think. Metacognition allows a person to remain calm when every bone in his body is telling him to panic. It is almost certainly what allowed Capt. Sullenberger to assess his options and settle on the best one. That's why he turned the plane south and pretended the river was a runway.
Jonah Lehrer is the author of "Proust Was a Neuroscientist" and "How We Decide."