Research has demonstrated the existence of misleading stereotypes of the abilities of black workers, which reflect a willingness to ________ about ethnic characteristic on the basis of very limited experience.
句意： 研究表明， 存在着对黑人工人能力的误导刻板印象， 这反映出他们愿意在非常有限的经验基础上概括种族特征。
generalize概括； 形成概念。criticize批评； 评论。 speculate推断； 推测。 contemplate沉思； 注视。