Psychology says the loudest person in your office may be changing everyone's behavior without realizing it

Psychology explains why some people lose focus in noisy open-plan offices while others seem unfazed, and what that says about stress, personality, and how workplaces are actually shaping behaviour in subtle but measurable ways.

It’s not just annoyance or “being sensitive.” A growing body of research suggests that office noise doesn’t only disrupt concentration, it can shift emotional states and even influence how people interact with colleagues.

A large experience sampling study published in the Journal of Business Research by Oluremi Bolanle Ayoko, Neal M. Ashkanasy and colleagues followed 71 employees working in open-plan offices in Australia. Using 672 real-time data points, researchers tracked how people reacted to everyday noise in the moment.


The pattern they found was consistent: perceived noise leads to negative emotion, which then leads to behavioural change.

When employees experienced higher levels of perceived office noise, they reported stronger negative emotions such as irritation and frustration. These emotional shifts were not harmless, as they directly predicted workplace behaviour.

The study found that withdrawal behaviours were more likely to appear, meaning employees mentally or physically disengaged from work when exposed to noise-related stress. It also observed increased task conflict, where friction during collaboration became more common.

Another outcome was territorial behaviour, where individuals subtly marked or defended their workspace more strongly than usual.

Why the brain treats background noise as a threat to focus

One of the strongest explanations comes from cognitive psychology: the human brain does not easily filter irrelevant sound.

Psychologist Nick Perham and colleagues in their study Distraction of Mental Arithmetic by Background Speech have shown that background noise, especially speech, impairs performance on tasks involving memory and mental sequencing.

This is because many cognitive tasks rely on inner speech, the mental voice used for thinking, rehearsing, or remembering.

When external speech is present, it competes directly with this internal system.

Interestingly, Perham’s experiments show that disruption is not limited to speech. Noise itself, even when it contains no words, still reduces cognitive performance.

Controlled studies found that participants performed worse in both speech-based office noise and non-speech office noise when compared with silence. This decline was observed in tasks like serial recall and arithmetic reasoning.

Even music does not fully solve the issue. In one study, participants believed music improved their performance, but objective results showed the opposite: performance was better in silence.

Neuroticism and emotional sensitivity

In a 2003 study, Noise and Mental Performance: Personality Attributes and Noise Sensitivity, individuals higher in neuroticism tend to experience stronger performance declines in noisy environments. This is likely because emotionally reactive individuals interpret background sound as more intrusive or stressful, increasing cognitive load and emotional strain.

At the extreme end is misophonia, a condition in which everyday sounds such as chewing, tapping, or breathing can trigger intense emotional reactions like anger or anxiety.

Workplace-focused reporting, including BBC coverage, suggests this is more common than often assumed, with estimates indicating that around 1 in 5 people may experience strong negative reactions to specific sounds.

Neuroscientific findings further show that these trigger sounds activate brain regions associated with emotional processing and bodily distress, suggesting that for some individuals, sound is processed as a threat rather than neutral background information.

The office is not just loud, it’s cognitively incompatible with focus

Another key mechanism is interference with working memory. When people engage in tasks like planning, remembering sequences, or solving problems, they rely on internal rehearsal systems. Background noise disrupts this by continuously intruding into attentional processes.

Research highlights two main mechanisms behind this disruption.

The first is similarity interference, where human speech in the environment competes with internal speech used for thinking.

The second is attention capture, which occurs because the brain is evolutionarily designed to monitor surrounding sounds for important signals such as danger or personal relevance. As a result, even ignored noise is still partially processed, consuming cognitive resources.