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Scientists Identify Gene Mutation Behind Low Grades Among Students
"When we first got this result we were surprised," New Scientist quoted Chang as saying.
The researcher revealed that the 60 students with two copies of the Met-158 mutation scored far worse than other students, particularly those with two copies of Val-158, on the physical science and social science portions of the exam.
Their scores in mathematics, English, Chinese and writing also tended to be lower than those of other students.
Chang says that the Met-158 mutation not only affect memory and verbal IQ, but it has also been linked to mental illness, anxiety and emotional vulnerability in previous research.
Based on that observation, Chang suggests that in the context of an extremely stressful, high-stakes exam, it makes sense that students with the Met-158 allele tested more poorly than others.
Chang, however, is not sure whether or not his team's findings will apply to other groups.
He speculates that the results may be specific to Asian countries like Taiwan, South Korea and Japan, where national exams can make or break a student's future.
A research article on his study has been published in the journal Brain and Cognition.
Source-ANI
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