Age-induced change in visual acuity and its impact on performance in a project management task
Demographic changes have important implications for the quality of working life. Increasing age is often accompanied by changes in perceptual, cognitive and motor abilities. The scientifically proven decrease of visual acuity with age is of particular importance for computer work. In this paper, acuity of vision was measured using a standardized eyesight test called Rodatest 302. To investigate the age-induced change in visual acuity and its impact on human performance, a project management experiment was conducted in three different font sizes (12, 16 and 22 arc minutes) and three different views (gantt chart, network map, calendar). 72 subjects aged between 20 and 72 years participated in the experiment. The project management experiment consisted of six typical process manipulation tasks: “rename a process, “adjust the task duration, “create a new process, “determine the subsequent or precursor process, “change the start respective finish time and “delete a process. A maximum of 36 tasks per font size could be processed within 20 minutes. The number of processed tasks and the frequency of correctly processed tasks were analyzed as measures of speed and accuracy, respectively. Results from the analysis of variance show large effects of age on both performance indicators. Results from the partial correlation analysis show that age has a stronger influence on speed and accuracy than visual acuity.
Sebastian Vetter Nicole Schneider Markus S. Koppenborg Bernhard Kausch Christopher M. Schlick
Institute of Industrial Engineering and Ergonomics, RWTH Aachen University
国际会议
17th World Congress on Ergonomics(第十七届国际人类工效学大会)
北京
英文
1-6
2009-08-09（万方平台首次上网日期，不代表论文的发表时间）