Department of Sports Science and Physical Education, The Chinese University of Hong Kong, Shatin, NT, Hong Kong, China.
Dev Psychobiol. 2010 Sep;52(6):505-12. doi: 10.1002/dev.20452.
Adults often miss a disturbingly high percentage of rare targets in visual arrays. The mechanisms underlying this effect remain hotly debated. This study examines the effects of developing motor control on the speed and accuracy of visual search. Children detected targets that appeared rarely or frequently. Participants reported a target's presence or absence by either pressing a key or marking on recording sheets. The results replicated past reports of increased errors with reduced target prevalence in adults. A potential developmental trend in performance is linked to a measure of motor function. When the pressure to respond quickly was removed, search accuracy greatly improved for rare targets. A developmental account for the perceptual-motor mechanisms of prevalence effect is discussed.
成年人在视觉数组中经常错过高比例的罕见目标。这种效应的机制仍在激烈争论中。本研究考察了运动控制发展对视觉搜索速度和准确性的影响。儿童检测到很少或经常出现的目标。参与者通过按键或在记录纸上标记来报告目标的存在或不存在。结果复制了过去在成人中发现的目标出现频率降低导致错误增加的报告。表现的潜在发展趋势与运动功能的衡量标准有关。当需要快速反应的压力消除时，对罕见目标的搜索准确性大大提高。讨论了流行效应的知觉运动机制的发展解释。
