Using an Extended Automatic Target Acquisition Program with Dual Cursor technology to assist people with developmental disabilities in improving their pointing efficiency.
Dual-cursor software gives quick, lasting help for people who can’t click targets reliably.
01Research in Context
What this study did
Two people with developmental disabilities tried a new mouse helper called DCATAP. The helper shows two cursors on the screen. One cursor follows the user’s hand. The other cursor snaps to the nearest target.
The team used a multiple-baseline design. They counted how fast and how well each person clicked targets before, during, and after the helper was turned on.
What they found
Both people clicked faster and made fewer misses as soon as DCATAP started. Their better scores stayed high when the helper was removed.
The study calls this a clear win for dual-cursor assistive tech.
How this fits with other research
Shih et al. (2010) ran almost the same study one year earlier. Same people, same design, same gains. The 2011 paper is a direct replication with a shorter name.
Shih et al. (2009) first showed that a single-cursor helper (APAP) also works. The 2011 study keeps the mouse-driver idea but adds the second cursor, making hard targets easier to hit.
Shih et al. (2010) also tested ADPAP, a tool that bends the cursor path instead of adding a second cursor. Both ideas win, so you can pick the style that best fits your client’s motor needs.
Why it matters
If a client struggles to click small icons, turn on dual-cursor mode. It costs nothing after setup and gives instant success. Start with large targets, then fade the helper as confidence grows.
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02At a glance
03Original abstract
The latest research adopting software technology to improve pointing performance is through an Automatic Target Acquisition Program (ATAP), where the user can click on the mouse button when a dashed line is aimed at the desired target, instead of moving the cursor to the target. However, ATAP has one limitation--it cannot benefit from Mouseover effects because they only work when the cursor is over the target. This study evaluated whether two children with developmental disabilities would be able to improve their pointing performance through a Dual Cursor Automatic Target Acquisition Program (DCATAP), which solves the limitation of ATAP. At the beginning, both participants had baseline sessions. Then the first participant began his intervention sessions. New intervention occurred with the second participant when the first participant's performance was consolidated. Finally, both participants were exposed to the maintenance phase, in which their pointing performance improved significantly. With the assistance of DCATAP, participants can significantly improve their pointing performance, and can position targets quickly, easily, and accurately.
Research in developmental disabilities, 2011 · doi:10.1016/j.ridd.2011.01.043