There also seemed to be an optimum speed. Correct decisions came when the referees were moving at a speed of about 2 meters per second. The average speed for errors was 4 meters per second.
If FIFA, footballs international ruling body, wants to improve the standard of refereeing at the next World Cup, it should encourage referees to keep their eyes on the action from a distance, rather than rushing to keep up with the ball, the researcher argues.
He also says that FIFAs insistence that referees should retire at age 45 may be misguided. If keeping up with the action is not so important, their physical condition is less critical.
51. The experiment conducted by the researcher was meant to _______.
A) review the decisions of referees at the 1998 World Cup
B) analyse the causes of errors made by football referees
C) set a standard for football refereeing
D) reexamine the rules for football refereeing
52. The number of refereeing errors in the experimental matches was _______.
A) slightly above average
B) higher than in the 1998 World Cup
C) quite unexpected
D) as high as in a standard match
53. The findings of the experiment show that _______.
A) errors are more likely when a referee keeps close to the ball
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