Editing Scrollbar (section)

== Studies ==
A 1986 report by [[Bill Buxton|William Buxton]] and [[Brad A. Myers|Brad Myers]] tested different two-handed interactions, including scrolling, clicking, and resizing. In their study, clicking and resizing were done in parallel. Their first experiment called for participants to perform a selection/positioning task, and their second experiment requested that participants do a compound navigation/selection task. The study found that users can perform these tasks faster and in parallel when they use both hands, but not necessarily when they use both hands simultaneously. They also found that the more related the tasks were that they user was doing with each of their hands, the faster they performed the tasks they were asked to do.<ref>{{cite book|last1=Buxton|first1=William|last2=Myers|first2=Brad|title=Proceedings SIGCHI '86: Human Factors in Computing Systems|date=April 1986|location=Boston, MA|pages=321–326|chapter=A Study in Two-Handed Input}}</ref>