How Well Do People Rate Their Performance With Different Cursor Settings?

David, Tasha Y.; Peres, S. Camille; Harper, Christy

doi:10.1177/1541931213571348

Cited by 3 publications

(2 citation statements)

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“…A second analysis aimed at improving testing efficiency examined the potential to assess touchpads using 24 trials in a Fitts task, a number similar to the smallest number of trials in the literature (David, Peres & Harper, 2013). Analyses revealed that with 24 participants, 24 trials may be recommended as both 24 and 48 trials were able to demonstrate the significant differences between MT and ER for all target sizes as well as small targets only between the two touchpads.…”

Section: Discussionmentioning

confidence: 99%

“…However, while the use of Fitts tasks to assess performance between two touchpads is a common practice, there does not seem to be a widely used standard regarding the number of trials and participants. Specifically, a preliminary review of the literature has revealed that research assessing performance of pointing devices through Fitts tasks range from 10 to 36 participants (Avera, Harper, Russi-Vigoya & Stoll, 2016;Rawdin, Vanderheiden & Lin, 1990;Sawin & Ark, 1999;Sutter & Ziefle, 2005) and from 20 to 640 trials (Bohan, Slocum, Shaikh & Chaparro, 2003;David, Peres & Harper, 2013;Kar, Vu, Nehme & Hedge, 2015). Often, industry practitioners in particular are interested in individual device assessments as well as finding differences between two touchpads.…”

Section: Introductionmentioning

confidence: 99%

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Exploring the Optimal Number of Trials and Participants for Touchpad Testing Using Fitts-based Tasks

Avera

Kelling

Harper

et al. 2017

Proceedings of the Human Factors and Ergonomics Society Annual

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With touchpads being the primary input device for many laptop users, the importance of ensuring that laptops have the most functional touchpad has continued to grow. Human Factors practitioners are often tasked with ensuring that touchpads are accurate and efficient input devices. Tasks based on Fitts law to assess point and click performance are commonly used for testing touchpads, however there does not seem to be a widely used standard regarding the number of trials and participants. Testing with more trials and participants than necessary can be time consuming and costly for industry practitioners. This research explored varied numbers of participants and Fitts task trials with the goal of determining the optimal practices to maximize efficiency. Preliminary results indicate that when testing performance with a multidirectional Fitts test, twelve participants is acceptable for device comparison with at least 48 trials. For a sample size of 24 participants, there is evidence to support reducing the number of trials to 24. Implications for examining other testing scenarios for optimal sample size and trial number with the prescribed methodology are discussed.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Exploring the Optimal Number of Trials and Participants for Touchpad Testing Using Fitts-based Tasks

Avera

Kelling

Harper

et al. 2017

Proceedings of the Human Factors and Ergonomics Society Annual

Self Cite

View full text Add to dashboard Cite

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Usability Testing of Video Game Controllers: A Case Study

Young¹,

Kehoe²,

Murphy³

2016

Games User Research

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This chapter presents an investigation that compares the performance of game controllers in two-dimensional pointing tasks as defined in the international standard that specifies the requirements for nonkeyboard input devices, ISO 9241-9. In addition, we discuss the evaluation of usability and user experience with these devices during gameplay. We compared performance measurements for controllers while varying the user's exposure to the different feedback elements contained within each controller device. We assessed the performance of the controllers according to the ISO 9241-9 evaluation recommendations. The devices used in the study included a Logitech mouse and keyboard, a Logitech Bluetooth Touchpad and keyboard, a Sony Playstation DualShock 4 controller, and Valve's first-generation Steam controller. Besides performance testing, we measured user experiences with the controllers while playing a popular first-person video game. Participants were asked to complete game levels for each type of controller and answer questions outlining their experience. ORGANIZATION/INSTITUTION BACKGROUND The case studies contained within this chapter were undertaken at the Logitech Design Lab in Cork, Ireland, in collaboration with the Department of Computer Science at University College Cork. Logitech is a world leader in products that connect people to the digital experiences they care about. Their products span multiple computing, communication, and entertainment platforms. Logitech-gaming products include mice, keyboards, headsets, and gaming controllers. University College Cork was founded in 1845 and is the academic home of the founder of Boolean Logic, George Boole.

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