Psychologist Colin DeYoung and His Colleagues Studied Over 100 Male

Psychologist Colin DeYoung and his colleagues studied over 100 male and female participants who underwent MRI scans and took the NEO Personality Inventory, a personality test that is used to measure the Big Five. The researchers then compared the brain scans of participants and the personality test results. What was one of the researchers' findings?

A) Extraversion was associated with larger brain tissue volume in the medial orbitofrontal cortex, a brain region that is associated with sensitivity to rewarding stimuli.
B) Extraversion was associated with smaller brain tissue volume in the medial orbitofrontal cortex, a brain region that is associated with sensitivity to rewarding stimuli.
C) Extraversion was associated with larger brain tissue volume in the fusiform gyrus, a brain region that is associated with sensitivity to rewarding stimuli.
D) Extraversion was associated with smaller brain tissue volume in the fusiform gyrus, a brain region that is associated with sensitivity to rewarding stimuli.