One current discussion involving the brain’s emotional bias is to be found in and circulating around Drew Westen’s recent book, The Political Brain: The Role of Emotion in Deciding the Fate of the Nation. Whatever one’s political persuasion, the book suggests among other things that emotion trumps reason when it comes to choosing political candidates.

Westen’s book is based upon studies done at Emory University.

The study has potentially wide implications, from politics to business, and demonstrates that emotional bias can play a strong role in decision-making, Westen says. “Everyone from executives and judges to scientists and politicians may reason to emotionally biased judgments when they have a vested interest in how to interpret ‘the facts,’ ” Westen says.

The mechanism can be seen as an illustration of confirmation bias, the seeking of information that supports existing beliefs while ignoring or discounting contradictory evidence.

What can be done? Factoring in awareness of emotional bias is a start. A process of positive skepticism, as suggested by Michael Shermer (publisher of The Skeptic, no less), might be a useful methodology. And there are many others.

What remains foundational, whatever our arena of decision-making, is the strength of emotional bias within our mental processes and the need to manage it well.