Social norms

I have never quite understood social norms, both the concept and how to identify and comport myself consistently with various social norms, which make the findings from a recent study so interesting:

Neuroeconomists at the University of Zurich have identified a specific brain region that controls compliance with social norms. They discovered that norm compliance is independent of knowledge about the norm and can be increased by means of brain stimulation.

The oft-cited complaint about sociopaths is that they actually do know right from wrong, so they should be held to the same standards of behavior as everyone else. The findings of the study were actually consistent with this belief, but interestingly the researchers found that the knowledge of right and wrong was independent of a person's behavior under different brain stimulation treatments:

When neural activity in this part of the brain was increased via stimulation, the participants’ followed the fairness norm more strongly when sanctions were threatened, but their voluntary norm compliance in the absence of possible punishments decreased. Conversely, when the scientists decreased neural activity, participants followed the fairness norm more strongly on a voluntary basis, but complied less with the norm when sanctions were threatened. Moreover, neural stimulation influenced the participants’ behavior, but it did not affect their perception of the fairness norm. It also did not alter their expectations about whether and how much they would be punished for violating the norm.

"We found that the brain mechanism responsible for compliance with social norms is separate from the processes that represent one’s knowledge and beliefs about the social norm," says Ernst Fehr, Chairman of the Department of Economics at the University of Zurich. "This could have important implications for the legal system as the ability to distinguish between right and wrong may not be sufficient for the ability to comply with social norms." Christian Ruff adds: "Our findings show that a socially and evolutionarily important aspect of human behavior depends on a specific neural mechanism that can be both up- and down-regulated with brain stimulation."

So if I took a non-sociopath and "stimulated" their brain in a particular way, they too would change their behavior to be more likely to violate a fairness norm, despite knowing that it was "wrong". I guess we're not so different after all? Or maybe does this mean we should be implanting the brain equivalent of a heart's pacemaker in the brains of sociopaths to get them to be more docile and compliant?

The other interesting finding was that people with high stimulation responded highly to punishment but their voluntary compliance went down, and vice versa. That sounds like sociopaths -- unlikely to be influenced by a threat of punishment but also oddly known to be randomly and voluntarily "altruistic".