This trend continues until kids are about 15. By that age, nearly everyone who cheated in the experiment will lie about it. The good news: The number of liars begins to decline beyond this age. By 17, the percentage that lies drops to about 70%.

这个趋势在孩子们大约15岁前都成立。而到了15岁，几乎所有在实验中偷看过玩具的人都会说谎。好消息是：在15岁以上的孩子里说谎者的数量开始出现下降。而到了17岁，说谎的比例减少到了大约70%。

Researchers have also examined why some kids lie more than others, and have found that it isn't related to better moral values or religious upbringing. Rather, it's kids with better cognitive abilities who lie more. That's because to lie you also have to keep the truth in mind, which involves multiple brain processes, such as integrating several sources of information and manipulating that information, according to Shawn Christ, a neuropsychologist at the University of Missouri-Columbia.

研究人员还调查了为什么某些孩子比其他孩子更爱说谎。他们发现，这和更为高尚的道德观或者和宗教成长环境无关。相反，那些拥有更优秀的认知能力的孩子们更爱撒谎。密苏里大学哥伦比亚分校(University of Missouri-Columbia)神经心理学家肖恩•克赖斯特(Shawn Christ)说，这是因为要想撒谎，你必须在头脑里保留真相，而这包含了几个步骤的大脑思维过程，比如整合几方面的信息以及操控这些信息。