Effects of Background Colors on Computer-Based English Tests from a Brain Activation Perspective

作者进行了实验，以了解基于网络的测试(WBT)的背景颜色如何影响基于网络的测试者的大脑活动。20多岁的受试者参加了基于网络的英语语法和听力测试，还在白色、蓝色和浅蓝色背景的电脑屏幕上完成了圆圈计算任务。对于所有背景颜色，文本和符号均以黑色显示。用近红外光谱仪(NIRS)记录受试者脑内血红蛋白(Hb)浓度的变化。在英语测试和计数任务中，蓝色背景的被试平均得分高于白色背景的被试。近红外光谱信号显示，蓝色背景下大脑语言区域的氧合血红蛋白浓度往往高于白色背景下。这些结果表明，对于WBT的背景色，蓝色可能是更好的选择。

The authors conducted experiments to see how the background color of Web-based tests (WBTs) can affect the brain activities of Web-based test takers. Subjects in their twenties took Web-based English grammar and listening tests and also performed circle-counting tasks on a computer screen with white, blue and light blue backgrounds. For all background colors, text and symbols were presented in black. Hemoglobin (Hb) concentration changes in the brain of each subject were recorded by using near-infrared spectroscopy (NIRS). On both the English tests and the counting tasks, the scores of the subjects were higher on average with the blue backgrounds than with the white background. The NIRS signals showed that linguistic areas in the brain tended to have higher oxy-Hb concentrations for the blue backgrounds than for the white background. These results suggest that a blue color may be a better choice for the background color of a WBT.