Impairment in Theory of Mind in Parkinson’s Disease Is Explained by Deficits in Inhibition

Table 5

Principal component analysis (with varimax rotation) for underlying factors on tests of executive function and false belief.

	Factor 1	Factor 2	Factor 3	Factor 4
False belief—high inhibition	0.81
False belief—low inhibition		0.67		0.52
Stroop—total	0.81
Hayling—overall score	0.77
Elevator counting with distraction	0.82
Plus/minus ratio			0.80	0.44
Brixton—overall score	0.67	0.47
Digit span: forwards—backwards		0.65
FAS—total	0.45	−0.58		0.42
Animals—total	0.61			0.42