The science behind a penalty kick
LONDON, England (AP) — Penalty-takers at the World Cup should ignore the goalkeeper and just focus on where they are going to kick the ball, a group of scientists said yesterday.
In a study led by Greg Wood, a psychologist from Britain’s Exeter University, researchers tracked the eye movements of penalty-takers in shoot-outs and noted how players about to kick a ball could be distracted by the goalkeepers in front of them.
“We focus on things in our environment that are threatening. In a penalty kick, that threat is a goalkeeper,” Wood said at a news briefing. “If he (the goalkeeper) can make himself more threatening, he can distract the kicker even more. By doing (certain) behaviours, he can make it so the kicker will kick (the ball) near the goalie.”
Penalty shoot-outs could be a decisive factor at the World Cup in South Africa.
Two of the past four tournament finals, in 1994 and 2006, have come down to penalty kicks; while a number of matches in the knockout stages have also been decided in shoot-outs.
Since shoot-outs were introduced in 1982, there have been 20 of them in seven World Cups.
Wood said the player taking the penalty kick was always the person in control but the more anxious he became, the more he would look at the goalkeeper.
“Don’t pay attention to the goalkeeper,” said Wood, whose study is due to be published in the Journal of Sports Sciences. “The control is with the kicker, and he must realise that, get confidence from it, and then align his eyes and let the eyes provide the brain with the necessary information for accurate shooting.”
One of the most famous examples of a goalkeeper putting off a penalty-taker came in the 1984 European Cup final when Liverpool goalkeeper Bruce Grobbelaar did a wobbly-leg dance that appeared to distract Roma’s players in a shoot-out the English club won.
“From a penalty-taker’s perspective, it seems unwarranted attention to a goalkeeper is suboptimal for accurate shooting and, more importantly, increases the likelihood of performance failure,” the study says.
“Whether it is a ‘spaghetti legs’ routine or simply the waving of arms, it seems that Bruce Grobbelaar was right: A distracting goalkeeper does test the concentration of penalty-takers.”
Eighteen university-level footballers, fitted with eye-tracking technology and subjected to a number of different situations making them more or less anxious when trying to score penalties, took part in the study.