Effects of grip span in one-handed thumb interaction with a smartphone: Beyond the thumb's length limitation

Kiseok Sung; Jay Cho; Andris Freivalds

doi:10.1177/1541931213601243

Effects of grip span in one-handed thumb interaction with a smartphone: Beyond the thumb's length limitation

Kiseok Sung, Jay Cho, Andris Freivalds

Marcus Department of Industrial and Manufacturing Engineering

Research output: Contribution to journal › Conference article › peer-review

11 Scopus citations

Abstract

The purpose of this study was to investigate whether different grip spans affected the touch performance of one-handed thumb interaction with a smartphone. Tapping time, hit count, and thumb-tip displacement were measured while using three mock-ups of an iPhone 5S, 6, and 6 Plus, respectively. In the tapping task, four positions were tested: top-left, top-right, bottom-left, and bottom-right. The results showed that the hit count (F_2,14=8.596, p=.004) and thumb-tip displacement (F_2,14=11.348, p=.001) significantly decreased as the grip span increased. Thus, we concluded that there existed another problem beyond the limit of thumb length that caused a reachability issue when using a large smartphone. Thus, this should be considered in the user interface design of a large smartphone.

Original language	English (US)
Pages (from-to)	1047-1051
Number of pages	5
Journal	Proceedings of the Human Factors and Ergonomics Society
DOIs	https://doi.org/10.1177/1541931213601243
State	Published - 2016
Event	Human Factors and Ergonomics Society 2016 International Annual Meeting, HFES 2016 - Washington, United States Duration: Sep 19 2016 → Sep 23 2016

All Science Journal Classification (ASJC) codes

Human Factors and Ergonomics

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10.1177/1541931213601243

Cite this

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title = "Effects of grip span in one-handed thumb interaction with a smartphone: Beyond the thumb's length limitation",

abstract = "The purpose of this study was to investigate whether different grip spans affected the touch performance of one-handed thumb interaction with a smartphone. Tapping time, hit count, and thumb-tip displacement were measured while using three mock-ups of an iPhone 5S, 6, and 6 Plus, respectively. In the tapping task, four positions were tested: top-left, top-right, bottom-left, and bottom-right. The results showed that the hit count (F2,14=8.596, p=.004) and thumb-tip displacement (F2,14=11.348, p=.001) significantly decreased as the grip span increased. Thus, we concluded that there existed another problem beyond the limit of thumb length that caused a reachability issue when using a large smartphone. Thus, this should be considered in the user interface design of a large smartphone.",

author = "Kiseok Sung and Jay Cho and Andris Freivalds",

note = "Publisher Copyright: Copyright 2016 by Human Factors and Ergonomics Society.; Human Factors and Ergonomics Society 2016 International Annual Meeting, HFES 2016 ; Conference date: 19-09-2016 Through 23-09-2016",

year = "2016",

doi = "10.1177/1541931213601243",

language = "English (US)",

pages = "1047--1051",

journal = "Proceedings of the Human Factors and Ergonomics Society",

issn = "1071-1813",

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T2 - Human Factors and Ergonomics Society 2016 International Annual Meeting, HFES 2016

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AU - Cho, Jay

AU - Freivalds, Andris

PY - 2016

Y1 - 2016

N2 - The purpose of this study was to investigate whether different grip spans affected the touch performance of one-handed thumb interaction with a smartphone. Tapping time, hit count, and thumb-tip displacement were measured while using three mock-ups of an iPhone 5S, 6, and 6 Plus, respectively. In the tapping task, four positions were tested: top-left, top-right, bottom-left, and bottom-right. The results showed that the hit count (F2,14=8.596, p=.004) and thumb-tip displacement (F2,14=11.348, p=.001) significantly decreased as the grip span increased. Thus, we concluded that there existed another problem beyond the limit of thumb length that caused a reachability issue when using a large smartphone. Thus, this should be considered in the user interface design of a large smartphone.

AB - The purpose of this study was to investigate whether different grip spans affected the touch performance of one-handed thumb interaction with a smartphone. Tapping time, hit count, and thumb-tip displacement were measured while using three mock-ups of an iPhone 5S, 6, and 6 Plus, respectively. In the tapping task, four positions were tested: top-left, top-right, bottom-left, and bottom-right. The results showed that the hit count (F2,14=8.596, p=.004) and thumb-tip displacement (F2,14=11.348, p=.001) significantly decreased as the grip span increased. Thus, we concluded that there existed another problem beyond the limit of thumb length that caused a reachability issue when using a large smartphone. Thus, this should be considered in the user interface design of a large smartphone.

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Effects of grip span in one-handed thumb interaction with a smartphone: Beyond the thumb's length limitation

Abstract

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