Somatic markers at work

An influential theory about emotion and decision-making just failed a new test

It’s a common belief that to make optimal decisions we need to be more logical and less emotional, rather like Mr Spock in Star Trek. In fact, much evidence argues against this. Consider the behaviour of patients whose brain damage has made them unusually cold and logical. Rather than this helping them make decisions, they often seem paralysed by indecision. These patients, who usually have damage to parts of their frontal cortex, also tend to perform poorly on a game that’s used by psychologists to measure risk-taking behaviour: the Iowa Gambling Task. The neurologist and author Antonio Damasio thinks this is because they have lost the ability to incorporate gut instincts – literally, their visceral reactions – into their decision-making, an idea that forms the basis of his Somatic Marker Hypothesis. ….[READ]