“…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.…”