An attentional circuit involving the insula, the anterior cingulate cortex, and the seems to play a role in complex social decision making, such as deciding whom to trust.

An attentional circuit involving the insula, the anterior cingulate cortex, and the amygdala seem to play a role in complex social decision making, such as deciding whom to trust.

Explanation:

The amygdala is a part of the limbic system, located at the end of the hippocampus. The task of the limbic system is to control our behavioral and emotional responses, especially those that ensure our survival, such as feeding, reproduction, caring for our young, and fight or flight responses.

The amygdala is responsible for the response and memory of emotions, especially fear. In an experiment, the scientists removed the amygdala from rats' brains, after which they showed no signs of fear at all. The amygdala plays a role in social decision making, such as deciding whom to trust, as those functions can depend on fear. If we are afraid of someone, we automatically do not trust them.