In the texture category, the researchers tested metaphors such as "having a rough day" and "using coarse language," by giving people a puzzle to solve that was either smooth or covered in sand paper.

在有关质地的调查中，研究人员通过给人们猜一个或是表面光滑，或是用砂纸包裹的谜语，来测试诸如“不舒服的一天”、“讲粗鲁的话”等比喻。