Dario Nardi, PhD, is the author or co-author of many books on personality, including NEUROSCIENCE OF PERSONALITY . Through various lab experiments, he has been able to map patterns of brain area use that are different or characteristic of different personality types. Here's a map of the brain areas that Nardi has explored defining: Anger Personally, one of the most interesting tidbits so far in reading his book has to do with anger. First, as a comment about the prefrontal regions, he states "those who underuse this region (Fp1 The Chief Judge) may be slow to make decisions, struggle to provide explanations, and/or have difficulty noticing errors or screening out negative input. Also, criticism or unpleasant ideas may easily move them to sadness, anger or fear." and "When we hear criticism, take in violent or depressing content, or otherwise receive distruptive data, we can use this region (Fp2: Process Manager) to delve into that in...