有的孩子拒绝去学校，也有的是因为品行问题被学校拒之门外。
Some children may refuse to go to school or may have been excluded because of their behaviour.
学校想知道是不是认知训练可以提高儿童学习的能力、控制注意力改善品行问题。
Schools want to know whether cognitive training can enhance children's learning ability while controlling attention and behavioral problems.
暴露组的儿童仅有12%和7%各表现出活动过度和品行问题，而非暴露组则为23%和14%。
Just 12 and 7 percent of this group had hyperactive and conduct problems, respectively, compared with 23 and 14 percent of those not exposed.
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