Cosmo Is Convinced That His Accountant Is a Drug Addict

Multiple Choice

Cosmo is convinced that his accountant is a drug addict.To determine whether he is correct, Cosmo asks his friends if the accountant sniffs a lot, uses slang when he speaks, or frequently excuses himself to use the men's room-three behaviors Cosmo believes are characteristic of drug addicts.Cosmo's methods illustrate

A) the false-consensus effect.
B) a self-fulfilling prophecy.
C) confirmatory hypothesis testing.
D) the trait negativity bias.