The Effects of Initial-Terminal Position on Pointing Task for Touch-Screen Tablet

Xianliang GE, Jie XU, Wanwan ZHENG, Hao NI, Liezhong GE, Huagen WAN*

*Corresponding author for this work

Research output: Journal PublicationsJournal Article (refereed)peer-review

2 Citations (Scopus)

Abstract

Previous studies have used the Fitts’ Law to predict the performance of pointing task on touch screens. It was found that moving distance, target width, and the direction of motion would affect the task performance. The present research aimed to investigate the impact of the initial and terminal positions (ITPs) on pointing performance in two Exps. ITPs were divided into two categories: center of a screen and outer of a screen (center ↔ outer) pointing, and outer of a screen to outer of a screen (outer→outer) pointing. In Exp 1, 30 participants performed the center ↔ outer pointing tasks with 8 directions. The results showed that the outer → center movement was significantly faster than the center → outer at 45°, 90°, and 180°. In Exp 2, 30 participants performed the outer → outer pointing tasks with eight directions. The current study revealed that the ITPs influenced the performance of the pointing task, possibly due to human biomechanical characteristics associated with different movements.
Original languageEnglish
Pages (from-to)1291-1299
Number of pages9
JournalInternational Journal of Human-Computer Interaction
Volume37
Issue number14
Early online date7 May 2021
DOIs
Publication statusPublished - 2021
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2021 Taylor & Francis Group, LLC.

Funding

This research was partly funded by Advance Research Fund Project in Manned Space Field (030602). National Natural Science Foundation of China [NSFC: 31671146] and Space Medical experiment Project of the China Manned Space Program [HYZHXM03001].

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