Table 1. Odds for fusion and fission illusions, Experiment 1 (central presentation).

Stimulus	Odds of illusion (multisensory)	Odds of illusion (unisensory)	Odds ratio	X 2(df)	X 2 p	Fisher p (one-sided)
1F2B (fission)	3.1	.25	12.4	27.8(1)	<.000	<.000
1F3B (fission)	4.6	.25	18.5	34.9(1)	<.000	<.000
2F1B (fusion)	.02	.02	1.0	1.0(1)	.3	.5
3F1B (fusion)	.03	.02	2.6	2.7(1)	.09	.08

The odds for fusion and fission illusions for each of the four illusion-capable stimuli in Experiment One (central presentation). The final odds ratio, and the significance of the association between stimulus type (uni- vs. multi-sensory) and reports of illusions (fissions/fusions vs non-illusory) are also shown.