Table S6.

Supplemental results of experiments 1–8: Control participants’ and IDs’ variance in performance

Experiment	Controls’ variance	IDs’ variance	Levene’s statistics
			W	P value
Experiment 1	0.53	0.39	0.07	0.79
Experiment 2
Upper limb	168	757	4.19	0.05
Lower limb	137	12	2.13	0.14
Experiment 3	0.37	0.06	4.32	0.05
Experiment 4
Small boxes	0.15	0.20	<0.01	0.98
Large boxes	0.20	0.23	0.01	0.91
Experiment 5	0.19	0.46	1.50	0.23
Experiment 6
Easy condition (forward bias)	181	81	0.73	0.40
Awkward condition (forward bias)	372	212	0.16	0.69
Experiment 7
Easy condition (forward bias)	98	121	0.05	0.82
Awkward condition (forward bias)	97	271	0.41	0.53
Experiment 8
Easy condition (forward bias)	103	500	2.13	0.16
Awkward condition (forward bias)	132	356	0.63	0.43