I didn’t know there was a name for this. Advertisers use this a lot, but we all fool ourselves and believe something just because we want to.
The Forer effect refers to the tendency of people to rate sets of statements as highly accurate for them personally even though the statements could apply to many people.
Psychologist Bertram R. Forer (1914-2000) found that people tend to accept vague and general personality descriptions as uniquely applicable to themselves without realizing that the same description could be applied to just about anyone.
The most common explanations given to account for the Forer effect are in terms of hope, wishful thinking, vanity and the tendency to try to make sense out of experience, though Forer’s own explanation was in terms of human gullibility. People tend to accept claims about themselves in proportion to their desire that the claims be true rather than in proportion to the empirical accuracy of the claims as measured by some non-subjective standard.
How can you use the Forer Effect in your writing, especially if you are writing copy for sales?