How being less agreeable can actually benefit your mental health
, get along well with others, and tend to be humble and compliant. The openness to experience factor comprises imagination, artistic interests, depth of emotions, tolerance for diversity, willingness to experiment, and intellectual curiosity. Those who score high in openness to experience tend to be nonconformists.
The researchers followed 65 elderly men and women who were assessed using three neurocognitive tests as well as cognitive and personality assessments at the beginning of the study, at 18 months in, and again at 54 months. They found that lower scores on agreeableness were associated with lower volume loss in the hippocampus, entorhinal cortex, amygdala, mesial temporal lobe, and precuneus areas of the brain. Higher scores on openness were related to lower volume loss in the left hippocampus.
The study could not demonstrate a cause-and-effect relationship between personality and the observed brain differences. But the researchers hypothesize that a less agreeable and more open personality may play some role in the preservation of volume in the brain areas of interest, which are involved in complex brain functions and vulnerable to irreversible damage to neurons and brain structure.
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