Improving the accuracy of touch screens: an experimental evaluation of three strategies
CHI '88 Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
An empirical comparison of pie vs. linear menus
CHI '88 Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
A comparison of selection time from walking and pull-down menus
CHI '90 Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
The limits of expert performance using hierarchic marking menus
INTERCHI '93 Proceedings of the INTERCHI '93 conference on Human factors in computing systems
Split menus: effectively using selection frequency to organize menus
ACM Transactions on Computer-Human Interaction (TOCHI)
T-Cube: a fast, self-disclosing pen-based alphabet
CHI '94 Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Tilting operations for small screen interfaces
Proceedings of the 9th annual ACM symposium on User interface software and technology
Making computers easier for older adults to use: area cursors and sticky icons
Proceedings of the ACM SIGCHI Conference on Human factors in computing systems
UIST '00 Proceedings of the 13th annual ACM symposium on User interface software and technology
ACM Transactions on Computer-Human Interaction (TOCHI) - Special issue on human-computer interaction with mobile systems
Increasing the opportunities for aging in place
CUU '00 Proceedings on the 2000 conference on Universal Usability
More than dotting the i's --- foundations for crossing-based interfaces
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Designing for dynamic diversity: interfaces for older people
Proceedings of the fifth international ACM conference on Assistive technologies
A three-state model of graphical input
INTERACT '90 Proceedings of the IFIP TC13 Third Interational Conference on Human-Computer Interaction
Considering the direction of cursor movement for efficient traversal of cascading menus
Proceedings of the 16th annual ACM symposium on User interface software and technology
The participatory design of a sound and image enhanced daily planner for people with aphasia
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Semantic pointing: improving target acquisition with control-display ratio adaptation
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Object pointing: a complement to bitmap pointing in GUIs
GI '04 Proceedings of the 2004 Graphics Interface Conference
Tilt to Scroll: Evaluating a Motion Based Vibrotactile Mobile Interface
WHC '05 Proceedings of the First Joint Eurohaptics Conference and Symposium on Haptic Interfaces for Virtual Environment and Teleoperator Systems
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
The bubble cursor: enhancing target acquisition by dynamic resizing of the cursor's activation area
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
International Journal of Human-Computer Studies - Special issue: Fitts law 50 years later: Applications and contributions from human-computer interaction
International Journal of Human-Computer Studies - Special issue: Fitts law 50 years later: Applications and contributions from human-computer interaction
Effect of age and Parkinson's disease on cursor positioning using a mouse
Proceedings of the 7th international ACM SIGACCESS conference on Computers and accessibility
Requirements gathering with alzheimer's patients and caregivers
Proceedings of the 7th international ACM SIGACCESS conference on Computers and accessibility
Faster cascading menu selections with enlarged activation areas
GI '06 Proceedings of Graphics Interface 2006
An evaluation of sticky and force enhanced targets in multi target situations
Proceedings of the 4th Nordic conference on Human-computer interaction: changing roles
A predictive model of menu performance
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Shift: a technique for operating pen-based interfaces using touch
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Bubbling menus: a selective mechanism for accessing hierarchical drop-down menus
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Slipping and drifting: using older users to uncover pen-based target acquisition difficulties
Proceedings of the 9th international ACM SIGACCESS conference on Computers and accessibility
Providing good memory cues for people with episodic memory impairment
Proceedings of the 9th international ACM SIGACCESS conference on Computers and accessibility
Using participatory activities with seniors to critique, build, and evaluate mobile phones
Proceedings of the 9th international ACM SIGACCESS conference on Computers and accessibility
Simple pen interaction performance of young and older adults using handheld computers
Interacting with Computers
Understanding pointing problems in real world computing environments
Proceedings of the 10th international ACM SIGACCESS conference on Computers and accessibility
Fitts' law as a research and design tool in human-computer interaction
Human-Computer Interaction
Effects of Target Expansion on Selection Performance in Older Computer Users
ACM Transactions on Accessible Computing (TACCESS)
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Tablet PCs are gaining popularity, but many individuals still struggle with pen-based interaction. In a previous baseline study, we examined the types of difficulties younger and older adults encounter when using pen-based input. The research reported in this article seeks to address one of these errors, namely, missing just below. This error occurs in a menu selection task when a user’s selection pattern is downwardly shifted, such that the top edge of the menu item below the target is selected relatively often, while the corresponding top edge of the target itself is seldom selected. We developed two approaches for addressing missing just below errors: reassigning selections along the top edge and deactivating them. In a laboratory evaluation, only the deactivated edge approach showed promise overall. Further analysis of our data revealed that individual differences played a large role in our results and identified a new source of selection difficulty. Specifically, we observed two error-prone groups of users: the low hitters, who, like participants in the baseline study, made missing just below errors, and the high hitters, who, in contrast, had difficulty with errors on the item above. All but one of the older participants fell into one of these error-prone groups, reinforcing that older users do need better support for selecting menu items with a pen. Preliminary analysis of the performance data suggests both of our approaches were beneficial for the low hitters, but that additional techniques are needed to meet the needs of the high hitters and to address the challenge of supporting both groups in a single interface.