In a study likely to make school caretakers worried, US researchers said on Wednesday that chewing gum may boost academic performance in teenagers. Many US schools ban chewing gum because children often dispose of the sticky gum under chairs or tables. But a team led by Craig Johnston at Baylor College of Medicine found students who chewed gum during math class had higher scores on a standardized math test after 14 weeks and better grades at the end of the term than students in the class who did not chew gum. Gil Leveille, director of the Wrigley Science Institute, a research center of Wrigley Jr. Co., said Wrigley has got feedback from many of its gum customers who say chewing gum helps them stay focused. So, four years ago the company started the science institute to see if some of these claims have merit. The researchers at Baylor studied four math classes including 108 students aged 13 to 16 years old. 47. Who first believe that chewing gum helps people concentrate? A. Gum customers. B. Wrigley Science Institute. C. Gum producers. D. Wrigley Jr Co.
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