Why do some of Gallup's Q12 survey questions have extreme wording?

Some of the questions do include extreme wording. Examples include, "I have a best friend at work" or "At work, I have the opportunity to do what I do best every day." Gallup scientists use extreme wording in several of the questions because research proved that this kind of language sorted high-performing teams from low-performing teams, in terms of critical outcomes such as productivity, profitability, safety, and retention.