Ideas of reference are a common feature of delusions in the victims of paranoidschizophrenia and similar psychoses. These delusions make the victim imagine that other people's conversations, newspaper headlines, and other human communications have a hidden meaning that impacts the victim directly.
... the age of 18, 6.9% from 18 to 24, 36.3% from 25 to 44, 25.1% from 45 to 64, and 7.0% who are 65 years of age or older. The median age is 36 years. For every 100 females ...