Size effects on the touchpad, touchscreen, and keyboard tasks of netbooks.

The size of a netbook plays an important role in its success. Somehow, the viewing area on screen and ability to type fast were traded off for portability. To further investigate, this study compared the performances of different-sized touchpads, touchscreens, and keyboards of four-sized netbooks for five application tasks. Consequently, the 7" netbook was significantly slower than larger netbooks in all the tasks except the 8.9" netbook touchpad (successive selecting and clicking) or keyboard tasks. Differences were non-significant for the operating times among the 8.9", 10.1", and 11.6" netbooks in all the tasks except between the 8.9" and 11.6" netbooks in keyboards tasks. For error rates, device-type effects rather than size effects were significant. Gender effects were not significant for operating times in all the tasks but for error rates in touchscreen (multi-direction touching) and keyboard tasks. Considering size effects, the 10.1" netbooks seemed to optimally balance between portability and productivity.