Left, right, left, right, eyes to the front! Müller-Lyer bias in grasping is not a function of hand used, hand preferred or visual hemifield, but foveation does matter.

Nevertheless, it is noticeable that the group by task interaction almost reached significance ( F (1, 21) = 3.77, p = 0.066, η p 2 = 0.15), suggesting that the right-handers tended to show a larger illusory bias in the perception task than the left-handers (i.e., 14.3 vs. 10.9%), while there was clearly no difference in illusory bias between the groups for the action task (i.e., 5.9 vs. 4.3%).

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