Washington, Oct 28 : Tennis referees are very likely to make mistakes when they call balls "out" than when they call them "in", mainly because of the inherent bias in people perceiving moving objects, according to a new report.
As it turns out, the study by researchers at the University of California, Davis, might just support the recent rule changes allowing professional tennis players to challenge the referees'' calls, thus helping them in exploiting the new findings to their advantage.
David Whitney, a member of the research team, said that just like all visual illusions, the new discovery provides visual neuroscientists with a window on how the brain processes information.