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The impact of office sound on performance has lately become the topic of much disagreement. Several studies have attempted to objectively measure the effect of noise on office operation, but no consensus was reached. Studies have attempted to check the impact of ambient noise on degrees of alertness and fatigue, however, the results are mixed. A number of researchers report that the results are consistent across a high number of classes, but decisions are frequently controversial. A special laboratory test (EQ-i) was developed for the experimental assessment of office noise. The test has proven to be a reliable tool for measuring the effect of sound on workplace productivity.

The EQ-i is based on two elements. One part measures the cognitive processing of workplace workers, while another component measures the subjective response of office employees to various visual stimuli. The testing procedure is performed in a quiet room with the sound of a computer turned off. A battery of tests is done on a particular group of office personnel. A subjective questionnaire can be carried out on each individual to receive information in their working habits and opinions concerning the office environment. After a series of evaluations are performed on a random sample of office employees, a mean total score is calculated for every person.

Several other explanations have been advanced to account for the results of the EQ-i results. Potential explanations are that office workers were not subjected to enough high intensity or low intensity sound during the testing period, office equipment was malfunctioning or inaccurate, or the results were skewed due to several confounding factors. No alternative explanation has yet to be offered that can explain the results obtained from this evaluation.

A test study was conducted to determine the association between ambient temperature and indoor lighting in a health setting. Researchers measured indoor lighting at four different points in the office space and found a strong and significant relationship between the two. The investigators attributed this connection to the impact of light on worker's moods. Indoor temperature was shown to be negatively associated with the mood of office workers as evidenced by a statistically significant increase in stress levels. The authors concluded that"the current review... indicates that there is a negative relationship between ambient temperature and mood among office employees."

In a different study, researchers examined the effect of red vs. blue light on neurobehavioral testing. They measured neurobehavioral testing in a dimly-lit room and found no difference in performance between conditions. However, the researchers stressed the importance of using an appropriate neurobehavioral testing protocol and executing standardized psychological tests in clinical settings. They also highlighted that more studies should be done in order to examine the impact of reduced lighting on neurobehavioral testing.

A third research project attempted to measure the effect of temperature on reaction time in a laboratory setting. Researchers measured reaction time in a dimly-lit space and discovered that the reaction time increased when there was an increase in room temperature. However, they worried that this wasn't a substantial impact and has been influenced by the existence of other factors. For example, a slight increase in temperature decreased the amount of beta activity. What's more, the researchers emphasized that the effect of temperature on the reaction time could have significant implications for executive function evaluation.

The fourth study project tested the effect of temperature on executive function in an environment with two different light-sensitivity levels (daylight or dark). Two office workers, one with a day/night preference and another using a no-light taste, engaged in a job where their performance was tested with a reaction time paradigm. After completing the job, the operation of both office workers was compared. The results showed a significant main effect of temperature on the reaction time (p = 0.049). The authors concluded,"A different window of temperature advantage may contribute to executive processing rate " This study demonstrated that fever did really have a positive effect on reaction time as it had been controlled for neighboring lightness or darkness.

Overall, these studies confirm the significance of temperature for function performance. Specifically, they show that temperature can modulate multiple aspects of performance like attention, mood, alertness, and psychological performance. Office employees are especially susceptible to temperature fluctuations, which is probably because of the inherently challenging nature of the job that involves sitting in front of a computer screen or working with extreme lighting conditions.

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