Table 4.

Summary of the regression analyses for the pleasure and arousal change scores after the mood induction.

		MIP	Slope	Intercept	F(1,73)	p	r2	RMSE	r2 linear	RMSE linear
Anxious mood group	Pleasure	Short	0.635	-1.90	22.3	<0.001	0.23	0.892	0.19	0.918
		Long	0.656	-2.27	10.5	0.002	0.13	1.35	0.08	1.38
		IAPS	0.596	-1.50	15.4	<0.001	0.17	1.01	0.10	1.05
	Arousal	Short	-1.38	2.33	83.5	<0.001	0.53	0.988	0.46	1.06
		Long	-1.42	2.74	43.8	<0.001	0.38	1.43	0.31	1.50
		IAPS	-0.775	1.38	32.6	<0.001	0.31	0.902	0.27	0.926
Sad mood group	Pleasure	Short	0.787	-2.36	26.0	<0.001	0.26	1.023	0.23	1.05
		Long	0.909	-2.30	24.8	<0.001	0.25	1.21	0.23	1.23
		IAPS	0.769	-1.85	27.6	<0.001	0.30	0.911	0.19	0.958
	Arousal	Short	-0.300	0.384	1.62	0.208	0.02	1.57	0.01	1.58
		Long	-0.894	1.33	16.9	<0.001	0.19	1.45	0.19	1.45
		IAPS	-0.558	0.793	7.55	0.008	0.10	1.30	0.08	1.32

The predictor variable was the logarithmic of time (log X). The last columns displays the r² and the root-mean-square error (RMSE) of the linear model with time (X) as predictor variable.