Table 5:

Experiment 2 P2 multilinear regression analysis

	P2
Model	df	R²	MSE	F	p	Power
Contrast energy	1,94	0.124	2.16	13.35	0.0004	0.95
Spatial coherence	1,94	0.114	2.19	12.06	0.0008	0.93
Naturalness rating	1,94	0.092	2.24	9.49	0.003	0.86
Contrast energy, spatial coherence	2,93	0.138	2.15	7.43	0.001	0.93
Contrast energy, naturalness	2,93	0.226	1.93	13.61	6.5e-6	1.00
Spatial coherence, naturalness	2,93	0.166	2.08	9.25	0.0002	0.97
Contrast energy, spatial coherence, naturalness rating	3,92	0.227	1.95	8.99	2.7e-5	0.99
Fourier intercept	1,94	4.8e-4	2.47	0.045	0.83	0.06
Fourier slope	1,94	0.036	2.38	3.47	0.656	0.46
Openness rating	1,94	0.004	2.46	0.37	0.54	0.09
Fourier intercept, Fourier slope	2,93	0.191	2.02	10.99	5.1e-5	0.99
Fourier intercept, openness rating	2,93	0.007	2.48	0.31	0.73	0.10
Fourier slope, openness rating	2,93	0.036	2.41	1.72	0.19	0.37
Fourier intercept, Fourier slope, openness rating	3,92	0.207	2.00	7.98	8.1e-5	0.99
Contrast energy, spatial coherence, Fourier intercept, Fourier slope	4,91	0.208	2.10	5.99	0.0003	0.99
Naturalness rating, openness rating	2,93	0.096	2.26	4.94	0.009	1.00
All combined	6,89	0.366	1.65	8.58	2.3e-7	1.00