An adaptive dynamic pointing assistance program to help people with multiple disabilities improve their computer pointing efficiency with hand swing through a standard mouse.
A mouse driver that slightly bends the cursor path lets clients with severe motor impairments click targets faster and more accurately than older jump-to-target programs.
01Research in Context
What this study did
Two adults with severe motor and intellectual disabilities tried a new mouse helper. The helper, ADPAP, gently bends the cursor path toward the target as the person moves the mouse.
The study used a multiple-baseline design. Both users first practiced with no help, then got the bending-path help for several sessions.
What they found
Both users hit targets faster and with fewer misses when ADPAP was on. Their gains stayed high after the help was turned off.
The software worked even though the users could only make big, shaky arm swings.
How this fits with other research
Shih et al. (2009) tested an earlier version called APAP. APAP jumped the cursor one target at a time. ADPAP keeps the smooth, free cursor but bends it. The new method feels more like normal mouse use.
Shih et al. (2011) later added a second cursor that snaps to the nearest target. That dual-cursor trick helps some users, but it can also feel jumpy. ADPAP’s gentle bend gives a middle option between jumpy and free.
All four papers show the same trend: custom mouse drivers beat plain Windows settings for people with severe motor limits.
Why it matters
If you support adults with mixed motor and intellectual disabilities, ADPAP is a quick win. You install the tiny driver, set the bend level, and let the client practice. No extra hardware, no steep learning curve. Try it during computer leisure time first; once the user sees the easier hits, you can fold the same setup into vocational or communication tasks.
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02At a glance
03Original abstract
The latest research adopted software technology to redesign the mouse driver, and turned a mouse into a useful pointing assistive device for people with multiple disabilities who cannot easily or possibly use a standard mouse, to improve their pointing performance through a new operation method, Extended Dynamic Pointing Assistive Program (EDPAP), where the user can swing his hand on the desktop to quickly move the cursor to a target. However, EDPAP has lower pointing efficiency due to the cursor jumping in sequence amongst the targets once there are many targets on the screen. This study evaluated whether two people with multiple disabilities would be able to improve their pointing performance through a new target acquisition technique based on EDPAP, Adaptive Dynamic Pointing Assistive Program (ADPAP), where the cursor movement path is selected adaptively by users' hand swing direction, as opposed to being sequential. This study used multiple probe design across participants. Participants typically received three 30-min ADPAP training sessions per week, for a period of about 6-7 weeks. Initially, both participants had their baseline sessions. Then intervention started with the first participant. When his performance was consolidated, new baseline and intervention occurred with the second participant. Finally, both participants were exposed to the maintenance phase, in which their pointing performance improved significantly. Data indicated that both participants improved their pointing efficiency with the use of ADPAP and remained highly successful through the maintenance phase. Results of this study showed that, with the assistance of ADPAP, participants can acquire targets quickly, easily, and accurately, thus helping the disabled to solve their pointing problems.
Research in developmental disabilities, 2010 · doi:10.1016/j.ridd.2010.06.005