Table 3.

Correlations between alexithymia factor scores and performance on non-verbal neuropsychological tests in PD

	TAS-20 Factor 1	TAS-20 Factor 2	TAS-20 Factor 3
TMT A errors	0.667***	ns	ns
TMT B errors	ns	ns	0.529**
RCPM total	ns	ns	ns
Clock Reading errors	ns	ns	0.435*
Visual Symbol Search time	ns	0.434*	ns
BVSQB Drawing total correct	−0.535**	ns	ns
BVSQB Right-Left errors	0.523**	ns	ns

TAS-20: Toronto Alexithymia Scale-20

Factor 1: difficulty identifying feelings; Factor 2: difficulty describing feelings;

Factor 3: externally oriented thinking

FAS: Controlled Oral Word Association Test (F, A, S)

TMT: Trail Making Test

RCPM: Raven’s Coloured Progressive Matrices

BVSQB: Boston Visuo-spatial Quantitative Battery

Note: There were no significant correlations between alexithymia factor scores and performance on neuropsychological tests in the verbal domain.

^*p< 0.25,

^**p< 0.01,

^***p< 0.001