Table 4.

MRI abnormalities according to personality traits.

Personality traits	Openness		Conscientiousness		Extraversion		Agreeableness		Neuroticism
	M (SD)	p	M (SD)	p	M (SD)	p	M (SD)	p	M (SD)	p
Lacunes
Yes	3.57 (0.81)	0.88	3.30 (0.82)	0.10	2.86 (0.90)	0.16	3.92 (0.65)	0.11	2.61 (0.93)	0.22
No	3.54 (0.78)		3.60 (0.63)		3.18 (0.84)		4.19 (0.59)		2.87 (0.70)
Medial temporal atrophy
None or light	3.49 (0.54)	<0.05*	3.32 (0.64)	0.22	2.89 (0.93)	0.21	4.18 (0.50)	0.79	2.65 (0.84)	0.39
Mild	3.31 (0.76)		3.52 (0.71)		3.08 (0.87)		4.05 (0.75)		3.02 (0.67)
Moderate	3.83 (0.67)		3.70 (0.56)		3.35 (0.69)		4.19 (0.53)		2.77 (0.75)
Severe	3.36 (0.76)		3.58 (0.67)		3.02 (0.46)		4.22 (0.61)		2.78 (0.83)
Subcortical WML
None	3.58 (0.57)	0.80	3.82 (0.70)	<0.05*	3.29 (0.69)	0.36	4.25 (0.56)	0.38	2.46 (0.73)	<0.05*
Light	3.49 (0.74)		3.54 (0.55)		3.14 (0.82)		4.17 (0.55)		2.89 (0.69)
Moderate or severe	3.61 (0.80)		3.33 (0.68)		2.96 (0.84)		4.01 (0.72)		3.04 (0.79)
Periventricular WML
None or light	3.54 (0.76)	0.84	3.69 (0.63)	0.08	3.14 (0.76)	0.99	4.19 (0.60)	0.62	2.59 (0.66)	<0.01†
Moderate	3.51 (0.64)		3.36 (0.64)		3.12 (0.85)		4.15 (0.60)		3.16 (0.70)
Severe	3.65 (0.75)		3.55 (0.61)		3.12 (0.84)		4.00 (0.67)		2.78 (0.89)

MTL, medial temporal lobe; WML, white matter lesions; M (SD), mean (standard deviation) comparison with ANOVA; *p < 0.05; ^†p < 0.01.