Dr Tom Webb, a sports scientist at the University of Portsmouth, said referees at all levels of the game in the UK are now unlikely to be moved by the impassioned cries of the home fans and, critically, to be extremely fit, putting them at the centre of the action rather than 10-40 metres away, as they once were.
He said: “We’ve seen a slow decline in home advantage since the end of the Second World War but it has now almost entirely vanished in UK professional football.
“Referees have never before been subject to such close scrutiny. As well as fans, there are cameras watching their every move and pundits and experts analysing their every decision. It was inevitable the standard in refereeing would rise.”
'Home advantage due to four factors'
The research says home advantage is due to four factors: The visiting team being tired from travelling and having to play in unfamiliar surroundings; decisions tend to favour the home side; and the crowd’s effect on the players, the match officials, or both.
A rise in physical, technical and psychological training for referees has resulted in a pronounced falling away of home advantage.
“There’s now a sustained emphasis on and support across the game for extremely high standards in refereeing,” Dr Webb said.
“Physical fitness, combined with a rise in the number of coaches or mentors to help referees identify any weaknesses in their decision-making and to support their resilience, has knocked out the home advantage.”
This study was to examine in depth the reasons for such a fall-off by interviewing 18 people, including referees, former referees, referee assessors, referee coaches, managers and administrators associated with refereeing.
One of those who took part told researchers: “From when I started back in 1988 to now, I think referees probably get 100 times more support and have a lot more information and guidance than they’ve ever had.”
Another said the use of video playback meant it was now routine to review decisions and that he and colleagues also discuss every game, highlighting every decision that was handled well or could have been handled better.
Discussing the home crowd effect, one of those interviewed said referees “could be influenced by a number of factors, including the crowd, the score and previous decisions, but the best won’t be”.