Table 1. The fraction of unexplained variance (means over subjects) for all combinations of force field and model field in Experiment 1.

Force field	Model fields
	Rotation	Expansion	Translation
Centrifugal	0.91	0.81	0.32
Centripetal	0.97	0.79	0.25
Counterclockwise	0.90	0.82	0.21
Clockwise	0.84	0.83	0.34

The total variance is the sum of the squared differences between the errors for the null force field and for the other force fields. Bold numbers are combinations in which the model field matches the force field. The fits of the rotation and expansion model field leave most variance unexplained. The translation model field explains slightly more of the variance, but is unrelated to the presented force fields.