Table 4.

c value measured by SDT in the congenital amusia group and healthy control group.

	Congenital amusics	Healthy controls	p-value
Scale	−0.126 ± 0.366	0.153 ± 0.171	0.018*
Contour	−0.091 ± 0.345	0.011 ± 0.189	0.349
Interval	−0.270 ± 0.432	−0.130 ± 0.349	0.356
Rhythm	−0.061 ± 0.391	0.227 ± 0.163	0.020*
Meter	−0.252 ± 0.399	−0.277 ± 0.555	0.891
Memory	−0.058 ± 0.374	−0.029 ± 0.202	0.801
Global	−0.156 ± 0.246	0.045 ± 0.249	0.043*

SDT, signal detection theory.

^p*< 0.05, which indicated that there was a statistical difference in the c value between the two groups.