Table 2. Test of normality for data of the musical discrimination test and for music appreciation data (Shapiro-Wilk test, alpha level of 0.05).

Subtest		Pitch C2	Pitch B3	Pitch C7	Rhythm	Melodies	Chords	Instruments	Music appreciation
PreCIUs	W(15)	0.68	0.92	0.89	0.95	0.88	0.96	0.95	0.73
	P	<0.0001	0.20†	0.06†	0.57†	0.04	0.69†	0.55†	<0.001
PostCIUs	W(38)	0.95	0.97	0.89	0.94	0.90	0.97	0.97	0.87
	P	0.06†	0.38†	0.001	0.04	0.003	0.46†	0.43†	<0.0001
NHG	W(52)	0.81	0.79	0.67	0.95	0.96	0.96	0.77	0.74
	P	<0.0001	<0.0001	<0.0001	0.03	0.06†	0.10†	<0.0001	<0.0001

^†Data show normal distribution.