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The impact of office sound on performance has lately been the topic of much debate. Several studies have tried to measure the effect of sound on office performance, but no consensus was reached. Studies have tried to test the impact of surrounding noise on degrees of alertness and fatigue, but the results are mixed. A range of investigators report that the outcomes are consistent across a large number of classes, but decisions are frequently controversial. A special laboratory test (EQ-i) was developed for the experimental assessment of office sound. The evaluation has proven to be a reliable instrument for measuring the effect of sound on workplace productivity.

The EQ-i is based on two elements. One component measures the cognitive processing of office employees, while the other component measures the subjective response of office employees to different visual stimuli. The testing procedure is performed in a quiet room with the sound of a computer turned away. A battery of tests is performed on a particular group of office personnel. A subjective questionnaire can be carried out on every individual to receive information on their working habits and feelings concerning the workplace atmosphere. After a series of evaluations are conducted on a random sample of workplace personnel, an average total score is calculated for every person.

Several other explanations have been advanced to account for the outcomes of the EQ-i results. Potential explanations are that office workers weren't subjected to sufficient substantial intensity or low intensity noise throughout the testing period, workplace equipment was malfunctioning or inaccurate, or the results were skewed due to several confounding factors. No alternative explanation has not yet been offered that can clarify the results obtained from this evaluation.

An evaluation research was conducted to determine the relationship between ambient temperature and indoor lighting at a medical setting. Researchers measured indoor lighting in four distinct points from the office area and found a strong and significant relationship between both. The investigators attributed this relationship 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 anxiety levels. The authors concluded that"the present review... indicates that there is a negative relationship between ambient temperature and mood among office employees."

In another study, researchers tested the impact of red vs. blue light on neurobehavioral testing. They quantified neurobehavioral testing at a dimly-lit area and found no difference in functionality between conditions. However, the researchers emphasized the importance of using an appropriate neurobehavioral testing protocol and executing standardized psychological tests in clinical settings. They also emphasized that more studies must be done in order to examine the effect of reduced lighting on neurobehavioral testing.

A third research project tried to measure the effect of temperature on reaction time in a lab setting. Researchers measured reaction time at a dimly-lit space and found that the response time increased when there was an increase in room temperature. However, they worried that this was not a significant impact and was affected by the existence of other aspects. By way of instance, a slight increase in temperature diminished the amount of beta action. Furthermore, the researchers emphasized that the impact of temperature on the reaction time could have significant implications for executive function evaluation.

The fourth research project analyzed the effect of temperature on executive function in an environment with two different light-sensitivity levels (daytime or dark). Two office workers, one having a day/night preference and another with a no-light preference, engaged in a task in which their performance was analyzed using a reaction time paradigm. After finishing the task, the performance of both office employees was compared. The results showed a significant main effect of temperature on the response time (p = 0.049). The authors concluded,"A distinct window of temperature advantage may contribute to executive processing speed." This study showed that fever did really have a positive impact on reaction time when it was controlled for ambient lightness or darkness.

In general, these studies confirm the importance of fever for work performance. Specifically, they show that temperature can modulate numerous aspects of performance such as attention, mood, alertness, and psychological functioning. Office workers are particularly susceptible to temperature changes, which is likely because of the inherently challenging nature of the work that involves sitting before a computer screen or working with intense lighting conditions.

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