Neema Moraveji, Kori Inkpen, Edward Cutrell, and Ravin Balakrishnan
Mischief is a system for classroom interaction that allows
multiple children to use individual mice and cursors to
interact with a single large display . While the system
can support large groups of children, it is unclear how
children’s performance is affected as group size increases.
We explore this question via a study involving two tasks,
with children working in group sizes ranging from 1 to 32.
The first required reciprocal selection of two on-screen
targets, resembling a “swarm” pointing scenario that might
be used in educational applications. The second, a more
temporally and spatially distributed pointing task, had
children entering different words by selecting characters on
an on-screen keyboard. Results indicate that performance is
significantly affected by group size only when targets are
small. Further, group size had a smaller effect when
pointing was spatially and temporally distributed than when
everyone was concurrently aiming at the same targets.
In International conference on Human factors in computing systems (CHI 2009)
Publisher Association for Computing Machinery, Inc.
Copyright © 2007 by the Association for Computing Machinery, Inc. Permission to make digital or hard copies of part or all of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, to republish, to post on servers, or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from Publications Dept, ACM Inc., fax +1 (212) 869-0481, or firstname.lastname@example.org. The definitive version of this paper can be found at ACM’s Digital Library --http://www.acm.org/dl/.