Here is a brain teaser to get your mind moving- Is a pond of stones heavier than a pound of feathers? The answer- Of course, they both weigh the same. It’s been noticed that the the decisions people make are susceptible to how the choices are framed or presented to them. Now scientists are locating the centers in the brain related to how this “framing effect” can influence decision-making. The findings could have a huge impact on economics.
“Classical economics assumed humans are fundamentally rational and never really considered emotions quite important, but this shows emotions are embedded in our brain when it comes to making decisions,” said Benedetto De Martino, a cognitive neuroscientist at University College London.
De Martino and his colleagues scanned the brains of 20 volunteers. At the same time, the researchers told the participants they received a sum of money and then repeatedly posed them one of two choices. Either the volunteers were told they could keep a chunk of money or gamble, or informed they could lose some fraction or gamble.
As expected, those told they could keep money or gamble were generally more aware of risk. On the other hand, volunteers informed they could lose money or gamble often were more risk-seeking.
The volunteers who were more susceptible to the framing effect showed greater activity in an emotion- and learning-related brain region called the amygdala.
People most immune to this framing effect had increased activity in other brain regions, the orbital and medial prefrontal cortex, “some of the most modern areas of the brain, the most different between us and the other primates,” De Martino said. When these are damaged, the resulting behavior can be driven completely by emotion and impulse.
Emotions can help play a role in decision-making when information is incomplete or too complex, to serve as at times critical rules of thumb, the researchers said in their report. However, in modern society, where making the best decision can often require skills of abstraction and examining problems outside their context, emotions can render decisions irrational.
De Martino stressed that people who could overcome the framing effect did not lack emotions.