Table 2.

Mean and standard deviation of emotional potency and emotional arousal scores, as well as classifier performance across two background conditions and two time points.

	Instrumental music group (n = 38)		Vocal music group (n = 39)
	Positive instrumental	Negative instrumental	Positive vocal	Negative vocal
	M ± SD	M ± SD	M ± SD	M ± SD
Pre-test emotional state
Valence	4.579(0.92)	4.37(0.85)	4.79(0.83)	4.51(0.94)
Arousal	4.53(1.22)	4.45(1.11)	4.74(1.09)	4.80(1.03)
Post-test emotional state
Valence	6.53(1.01)	3.37(1.02)	6.9(1.02)	2.44(0.91)
Arousal	6.03(1.00)	5.61(0.95)	6.97(0.93)	5.87(0.89)