Distractor effects on crossing-based interaction

Huawei Tu, Jin Huang, Hai Ning Liang, Richard Skarbez, Feng Tian, Henry Been-Lirn Duh

Research output: Chapter in Book or Report/Conference proceedingConference Proceedingpeer-review

2 Citations (Scopus)


Task-irrelevant distractors affect visuo-motor control for target acquisition and studying such effects has already received much attention in human-computer interaction. However, there has been little research into distractor effects on crossing-based interaction. We thus conducted an empirical study on pen-based interfaces to investigate six crossing tasks with distractor interference in comparison to two tasks without it. The six distractor-related tasks differed in movement precision constraint (directional/amplitude), target size, target distance, distractor location and target-distractor spacing.We also developed and experimentally validated six quantitative models for the six tasks. Our results showthat crossing targets with distractors had longer average times and similar accuracy than that without distractors. The effects of distractors varied depending on distractor location, target-distractor spacing and movement precision constraint. When spacing is smaller than 11.27 mm, crossing tasks with distractor interference can be regarded as pointing tasks or a combination of pointing and crossing tasks, which could be better fitted with our proposed models than Fitts' law. According to these results, we provide practical implications to crossing-based user interface design.

Original languageEnglish
Title of host publicationCHI 2021 - Proceedings of the 2021 CHI Conference on Human Factors in Computing Systems
Subtitle of host publicationMaking Waves, Combining Strengths
PublisherAssociation for Computing Machinery
ISBN (Electronic)9781450380966
Publication statusPublished - 6 May 2021
Event10th International Conference on Materials Processing and Characterisation, ICMPC 2020 - Mathura, U.P., India
Duration: 21 Feb 202023 Feb 2020

Publication series

NameConference on Human Factors in Computing Systems - Proceedings


Conference10th International Conference on Materials Processing and Characterisation, ICMPC 2020
CityMathura, U.P.


  • Crossing
  • Distractor effects
  • Fitts' law
  • Models
  • Pointing

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