In fact, the wrong policies and tone do the reverse, as Vicky Fouka of StanfordUniversity found in a study of German-Americans living a century ago.

事实上，正如斯坦福大学的维基·弗卡在对生活在一个世纪前的德裔美国人的研究中所发现的那样，错误的政策和论调适得其反。