Buchner A, Baumgartner N
Institut für Experimentelle Psychologie, Heinrich-Heine-Universität, Düsseldorf, Germany.
Ergonomics. 2007 Jul;50(7):1036-63. doi: 10.1080/00140130701306413.
In a series of experiments, proofreading performance was consistently better with positive polarity (dark text on light background) than with negative polarity displays (light text on dark background). This positive polarity advantage was independent of ambient lighting (darkness vs. typical office illumination) and of chromaticity (black and white vs. blue and yellow). A final experiment showed that colour contrast (red text on green background) could not compensate for a lack of luminance contrast. Physiological measures of effort and strain (breathing rate, heart rate, heart rate variability and skin conductance level) and self-reported mood, fatigue, arousal, eyestrain, headache, muscle strain and back pain did not vary as a function of any of the independent variables, suggesting that participants worked equally hard in all experimental conditions, so that the interpretation of the primary performance measure was unlikely to be contaminated by a performance-effort trade-off.
在一系列实验中，正极性显示（浅色背景上的深色文本）的校对性能始终优于负极性显示（深色背景上的浅色文本）。这种正极性优势与环境照明（黑暗与典型办公室照明）以及色度（黑白与蓝黄）无关。最后一项实验表明，颜色对比度（绿色背景上的红色文本）无法弥补亮度对比度的不足。努力程度和压力的生理指标（呼吸频率、心率、心率变异性和皮肤电导率水平）以及自我报告的情绪、疲劳、唤醒、眼疲劳、头痛、肌肉紧张和背痛并未随任何自变量而变化，这表明参与者在所有实验条件下的努力程度相同，因此主要性能指标的解释不太可能受到性能与努力权衡的影响。
