Question

Describe the effect of noise on human behaviour.

Hint:

Remember that the most detrimental noise is {unpredictable} and {uncontrollable}. Having control over a noise source, even if you don't use it, can significantly reduce its negative effects.

Answer 1

Noise, defined as unwanted or unpleasant sound, can have significant negative effects on human behavior, cognition, and health. The impact often depends on the characteristics of the noise, such as its intensity, predictability, and controllability.
The effects can be categorized as follows:

Physiological Effects: Exposure to loud or chronic noise can trigger the body's stress response, leading to increased heart rate, elevated blood pressure, and the release of stress hormones like cortisol. Over time, this can contribute to cardiovascular problems and other health issues.

Cognitive Effects: Noise can impair cognitive performance, particularly on tasks that require attention, concentration, and memory. It can make it difficult to read, learn, and solve complex problems. Interestingly, simple, repetitive tasks are less affected and may sometimes even be enhanced by moderate noise due to increased arousal.

Emotional and Psychological Effects: Noise is a common source of annoyance, irritability, and anxiety. Prolonged exposure can lead to feelings of helplessness and a reduced sense of well-being.

Social Effects: Research has shown that noise can negatively impact social behavior. It can increase aggression and reduce pro-social or helping behaviors. People are often less willing to help others in noisy environments.