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Sensumotor transformation of input devices and the impact on practice and task difficulty

机译:输入设备的感觉运动转换及其对练习和任务难度的影响

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摘要

In the present study, the usability of two laptop input devices, touchpad and trackpoint, is evaluated. The focus is set on the impact of sensumotor transformation of input devices on practice and task difficulty. Thirty novices and 14 experts operated either touchpad or trackpoint over a period of 1600 trials of a point-click task. As hypothesized, novices and experts operated the touchpad by 15% faster compared to the trackpoint. For novices, performance rose distinctly and levelled off after 960 trials. This consolidation occurred earlier than reported in literature (1400-1600 trials) and, contrary to the assumption, learning was similar for touchpad and trackpoint. The impact of task difficulty dropped remarkably by practice, which points at a more general than specific task learning. In conclusion, ergonomic guidelines can be derived for the user-specific optimization of the usage of touchpad and trackpoint. Actual and potential applications of this research include the user-specific optimization of laptop input devices. Within the theoretical framework of psychomotor models, a profound knowledge of user behaviour in human - computer interaction is provided. Ergonomic guidelines can be derived for the efficient usage of laptop input devices and an optimized hardware and software design.
机译:在本研究中,评估了两个笔记本电脑输入设备(触摸板和轨迹点)的可用性。重点放在输入设备的感觉运动转换对练习和任务难度的影响上。在1600次点击事件中,有30位新手和14位专家操作了触摸板或跟踪点。如假设的那样,与跟踪点相比,新手和专家操作触摸板的速度提高了15%。对于新手来说,性能经过960次试验后明显提高并趋于稳定。这种整合发生的时间早于文献报道的次数(1400-1600次试验),并且与假设相反,触摸板和轨迹点的学习方式相似。通过实践,任务难度的影响显着下降,这表明比特定的任务学习更为笼统。总之,可以针对触摸板和轨迹点的用户特定优化推导出人体工程学准则。这项研究的实际和潜在应用包括针对笔记本电脑输入设备的用户特定优化。在心理运动模型的理论框架内,提供了人机交互中用户行为的深刻知识。可以导出人机工程学准则,以有效使用笔记本电脑输入设备并优化硬件和软件设计。

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