New research reveals that the more people think they know about a topic in general, the more likely they are to allege knowledge of completely made-up information and false facts, a phenomenon known as “overclaiming.” The findings are published in Psychological Science, a journal of the Association for Psychological Science.

“Our work suggests that the seemingly straightforward task of judging one’s may not be so simple, particularly for individuals who believe they have a relatively high level of knowledge to begin with,” says psychological scientist Stav Atir of Cornell University, first author on the study.

To find out why people make these spurious claims, Atir and colleagues David Dunning of Cornell University and Emily Rosenzweig of Tulane University designed a series of experiments testing people’s self-perceived knowledge, comparing it to their actual expertise.

Association for Psychological Science

Source: Self-proclaimed experts more vulnerable to the illusion of knowledge