The sound of home

Does crowd noise really intimidate opponents, or does it influence the referee more than the players?

Dr Phil Barter | https://orcid.org/0009-0005-4041-4288

There are few descriptions in football as evocative as a stadium becoming a cauldron of noise. Anfield under the lights. St James’ Park when Newcastle are on top. A crowd rising as one when an opposition defender takes a difficult first touch, or when the home side wins a corner with ten minutes remaining. The language is familiar. The atmosphere is intimidating. The noise is deafening. The opposition cannot hear themselves think. The crowd becomes the twelfth man. And when the home team wins, the explanation almost writes itself.

But there is a problem with that story. How do we know the noise caused anything? Perhaps the visiting team struggled because the home side was better. Perhaps the tactical matchup was unfavourable. Perhaps the visitors were fatigued or simply made mistakes they would have made in an empty stadium. And even if the crowd genuinely influenced the result, there is another possibility that football discussions often overlook.

What if the people most affected by the noise aren't the players at all? What if they're the referees? Research into home advantage, crowd behaviour and officiating suggests that the relationship between atmosphere and performance is far more interesting than the traditional narrative allows. Crowds may influence decisions. They may change the emotional and physiological demands players experience. They may encourage more aggressive attacking behaviour. They may even affect how officials interpret ambiguous challenges.

But those are different mechanisms, and they should not be treated as interchangeable. For this article, we're going to separate them. We will look at the psychology of performance under pressure, the evidence for crowd-induced refereeing bias, and the remarkable natural experiment football experienced when supporters disappeared from stadiums during the COVID-19 pandemic. Then we'll turn to the Premier League and ask a question that is surprisingly difficult to answer:

Which stadiums are genuinely the hardest places to visit, once we account for how good the home team is?