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Third-person effect


The Third-person effect hypothesis predicts that people tend to perceive that mass media messages have a greater effect on others than on themselves, based on personal biases. Because of this perception, people tend to take action to counteract the messages’ influence. The Third-person effect manifests itself through an individual’s overestimation of the effect of a mass communicated message on the generalized other, or an underestimation of the effect of a mass communicated message on themselves.

These types of perceptions stem from a self-motivated social desirability (not feeling influenced by mass messages promotes self-esteem), a social-distance corollary (choosing to dissociate oneself from the others who may be influenced) and a perceived exposure to a message (others choose to be influenced by persuasive communication). Other names for the effect are "Third-person perception" and "Web Third-person effect". From 2015 the effect named "Web Third-person effect" when it is verified in social media, media websites, blogs and in websites in general.

Sociologist W. Phillips Davison, who first articulated the third-person effect hypothesis in 1983, explains that the phenomenon first piqued his interest in 1949 or 1950 upon learning of a Japanese attempt during World War II to dissuade black U.S. soldiers from fighting at Iwo Jima using propaganda. As Davison recounts, the leaflets stressed that the Japanese did not have a quarrel with the black soldiers and that they should give up or desert. Although there was no indication that the leaflets had any effect on the soldiers, the incident preceded a substantial reshuffle among the officers and the unit was withdrawn the next day.

Several years later while interviewing West German journalists to determine the influence of the press on foreign policy, Davison asked the journalists to estimate the influence their editorials had on readers. Although no evidence could be found to support their claims, Davison writes that a common response was, “The editorials have little effect on people like you and me, but the ordinary reader is likely to be influenced quite a lot.”

In both anecdotes, the parties that evaluated the impact of the communication estimated a larger media effect for others than on self. These and other experiences led Davison to articulate what he called the third-person effect hypothesis, which predicts:


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