For young kids, the temptation to cheat is 'tremendous' and 90% peek in these experiments. Even adolescents and adults are tempted in similar situations, says Dr. Lee.

对于儿童来说，偷看的诱惑力是巨大的，因此有90%的儿童在实验中都偷看了玩具。即便是青少年和成年人在类似的情况下也受到了引诱，李强说。

When the test giver returns to the room, the child is asked if he or she peeked. At age 2, about a quarter of children will lie and say they didn't. By 3, half of kids will lie, and by 4, that figure is 90%, studies show.

测试者回到房间后询问孩子们是否偷看了玩具。研究显示，在两岁的孩子里，大约有四分之一的人会撒谎说他们没有看过。三岁的孩子有一半会说谎，而到了四岁，这个数字是90%。