Circle-tracing apparatus. This figure is reprinted from Say et al. (2011) with permission from Elsevier. The additional box and cape to cover the participant’s arm in the indirect condition are not shown. The tablet displayed a 90-mm diameter circle and 5-mm thick annulus; the monitor displayed a 143-mm diameter circle and 9-mm thick annulus. The tablet and monitor were positioned to achieve a consistent horizontal diameter of ∼13° of visual angle. The red rectangle indicates the starting point from which participants were instructed to begin tracing.