关于信念毅力的研究很多。 在一项最早的研究中，研究人员要求女高中和大学生将自杀笔记归类为真假。 每个参与者都被告知他们的分类大多是准确的或大部分是不准确的。 尽管在研究汇报中被告知他们已经收到了有关分类准确性的反馈，但参与者仍然相信他们所告诉的内容。 因此，那些被告知对便条进行了准确分类的人继续认为，他们擅长从假冒伪劣中判断出真实的自杀便条，而被告知他们对便条进行了不正确分类的人则认为相反。 在另一项研究中，为参与者提供了两个案例研究，这些案例研究支持或不支持冒险与职业消防员的成功之间的联系。
There are many studies on belief perseverance. In one of the earliest studies, researchers asked female high schools and college students to classify suicide notes as true and false. Each participant was told that their classifications were mostly accurate or mostly inaccurate. Although they were told in the research report that they had received feedback on the accuracy of the classification, the participants still believed what they were telling. Therefore, those who were told to accurately classify the notes continue to believe that they are good at judging true suicide notes from counterfeiting, and those who are told that they have incorrectly classified the notes think the opposite. In another study, participants were provided with two case studies that supported or did not support the link between adventure and the success of professional firefighters.