The Spatial-Number Association of Response Codes Effect in the Processing of the Cylinders with Different Height

Abstract

When the numbers randomly presented in the center of the computer screen were sorted using both their left and right hands and quickly responded by pressing a button, the subjects always responded faster with their left hand for small numbers and faster with their right hand for large numbers. This phenomenon is called the Spatial-Number Association of Response Codes Effect. Although the Spatial-Number Association of Response Codes Effect has been found in all forms of digital processing, it is not clear whether the effect exists in cylinder classification. In this study, a rapid presentation stimulus classification paradigm was used to investigate the spatial-number association of response codes effect and its automatic mechanism in the processing of the cylinders with different height. The results showed that: (1) In the cylinders height classification task, the lower cylinders were respond to faster with the left hand than the right hand, and the higher cylinders were respond to faster with the right hand than the left hand. (2) In the cylinders color classification task, the lower cylinders were still respond to faster with the left hand than the right hand, and the higher cylinders were still respond to faster with the right hand than the left hand. These results show that the spatial-number association of response codes effect also can exist in the cylinders classification, and this effect can be activated automatically in the cylinder height irrelevant classification task.