If Rudder’s study hunted at lying, the National Survey of Sexual Attitudes and Lifestyle (NATSAL) categorically confirms it. The survey, conducted among 15,000 respondents by UCL and the London School of Hygiene and Tropical Medicine, is the gold standard of research. In 2010 it found that British heterosexual women admit to a mean of eight sexual partners, compared to twelve for men. The difference is logically impossible. If everyone is telling the truth the mean for each gender must be the same.
All of this foes to show that advertisers trying to understand their customers have a problem: if they listen uncritically to consumers, they’ll be misled.
Excerpt from: The Choice Factory: 25 behavioural biases that influence what we buy by Richard Shotton