Directionality in right, mixed and left handers

Directionality in right, mixed and left handers was studied, asking subjects to draw 6 familiar objects. All three handedness classes showed left directional bias, but they differed significantly in this respect, right handers being the most and left handers the least left directed. Directionality is related to handedness, but it seems to be governed by an autonomous underlying mechanism, which probably developed in the course of evolution to facilitate the perceptuo-motor relationships of the subject with the environment.