SPATIAL COMPATIBILITY IN TACTILE-VISUAL DISCRIMINATION

An earlier study found accuracy to be greater and response latency (RL) shorter when the response was made with the same hand as felt the relevant one of two simultaneously- presented nonsense shapes. The present experiment investigated whether this was due to uni- hemispheric input and motor control or to spatial compatibility between feeling and responding hands. Responding with the hand on the Same Side as the hand which felt the relevant stimulus-even if they were different hands-yielded shorter RL and greater accuracy which were not significantly improved by the additional use of the Same Hand. © 1979.