Table A2.

Results of the Principal Component Analysis over the data of three variables relating to general musical experience.

Principal Component Analysis	Comp.1	Comp.2	Comp.3
Importance of Components
Standard deviation	1.57	0.52	0.51
Proportion of Variance	0.82	0.09	0.09
Loadings
Duration of musical training	0.58	0.81	0.12
Number of musical instruments/activities	0.58	−0.50	0.64
Age of musical instrument/activity acquisition	0.58	−0.30	−0.76