If one parent is firm and the other is too forgiving, the son or daughter will key into that and attempt to manipulate the position to his or her advantage.
如果父母中的一位很坚定而另一个太过宽容，儿子或女儿会钻此空子并试图利用这种优势加以操纵。
3
Brunel decided not to pick her daughter up every time she wanted her to, started putting her to bed earlier, "coming down to her level" to talk to her in a firm tone, and using the naughty corner.