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standard error indicate that this pattern is not statistically significant, but it is interesting to note. 3.3 Cognition: Sustained Attention (CCPT) Four measures from the sustained attention task were taken to measure participants’ ability to concentrate. This included average reaction time during the task, the standard deviations of those response times, the percent of omission errors (when the participant did not respond to the target stimulus), and the percent of commission errors (when the participant responded to a non-target stimulus). Significant changes in these measurements between conditions would indicate that lighting condition had a significant impact on participants’ ability to concentrate and focus attention. 25 550 540 530 520 510 500 490 480 470 Average Reaction Time SAD Control Blue Figure 11: Average Reaction Time in the CCPT by Light Condition The figure shows the average reaction times in milliseconds for responses across three lighting conditions on the Conjunctive Continuous Performance Task. The lighting conditions included one 10,000 lux white light (SAD), one warm, dim light (Control), and one dim, blue light (Blue). The error bars reflect the standard error of the mean. A one-way ANOVA indicated that average reaction time during the CCPT was not significantly different across light condition, F(2,10) = 1.34, p = .28. Although the statistical tests show no significant differences between the groups, the numeric pattern of Reaction Time (ms)PDF Image | The Effects of Lighting Design on Mood, Attention, and Stress
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