Limitations
While our experiment tested a large sample of 65, we were limited to around 15–19 people per individual condition (of handedness group, and hand used). This meant that we may have been lacking statistical power to detect a small linear effect of drift that existed in the non-dominant hands of either group. Demonstration of a significant linear effect for the non-dominant hand would be aligned with our general predictions (in that we expect for both hands we should see maximal drift in the habitual action space). As stated in the “Introduction”, we predicted the more used (dominant) hand would show a significant usage effect, where the lesser used (non-dominant) hand would either show a slight or non-significant modulation of drift by use. This may be further explored by future research that, for example, looked only at one handedness group—allowing more participants in each ‘hand used’ condition.