12,000

We have over 12,000 students, from over 100 countries, within one of the safest campuses in the UK

93%

93% of Lancaster students go into work or further study within six months of graduating

Home > Research > Publications & Outputs > A study of two-handed scrolling and selection o...
View graph of relations

« Back

A study of two-handed scrolling and selection on standard notebook computers

Research output: Contribution in Book/Report/ProceedingsPaper

Published

Publication date2010
Host publicationProceedings of the 24th BCS Interaction Specialist Group Conference
Place of publicationSwindon
PublisherBritish Computer Society
Pages355-364
Number of pages10
ISBN (Print)978-1-78017-130-2
Original languageEnglish

Abstract

Although two-handed input can improve both efficiency and quality of user interaction, it is not commonly adopted as it requires additional input devices. In this paper we propose two-handed interaction on standard hardware - notebooks with external mouse - and for a common task - 2D scrolling. We introduce four techniques that leverage the built-in touchpad as a dedicated scrolling device for the non-dominant hand, for scenarios in which the mouse is used in parallel for object selection and manipulation tasks. The techniques implement relative scrolling, flicking, absolute positioning and token-based input on the touchpad. We present an empirical evaluation of these techniques in a task that simulates activities such as retouching of photos, or interaction with maps, in which users often switch between mouse interaction and scrolling. The results show initially best performance with relative scrolling as a familiar mapping, but strong learning effects for all techniques. Users had difficulty with absolute mapping of touchpad input due to a tendency to clutching and finger repositioning, but we observed that these problems are compensated when a token is used as absolute input device.