리스트 종류에 따른 커서의 순환 움직임의 유용성 차이

This study investigated the usefulness of the wraparound function that are usually employed in information displays of list types within diverse digital devices. The wraparound function indicates the cursor movement jumping to the last/first item when users move up/down the cursor at the first/last item in a list. This study performed two experiments on different kinds and lengths of lists with or without the wraparound function. The experimental results showed that the usefulness of the wraparound depended on the kinds and lengths of the list. In a long list, the wraparound helped to reduce the number of cursor movements, but made the moving speed of the cursor slow. The reason why the moving speed became slow might be because the participants needed the time to decide cognitively on whether they did the wraparound or not. In a more longer list, the increased time required for the decision making could be complemented by the decreased time owing to the reduced number of cursor movements with the effectiveness of the wraparound, thereby reducing total task completion time. Moreover, the participants admitted that the wraparound became more strongly necessary in the case of more long lists.