“There are people who prefer to say ‘Yes’, and there are people who prefer to say ‘No’. Those who say ‘Yes’ are rewarded by the adventures they have, and those who say ‘No’ are rewarded by the safety they attain. There are far more ‘No’ sayers around then ‘Yes’ sayers, but you can train one type to behave like the other. There is a link with status transactions here, since low-status players tend to accept, and high-status players to block.”
―
Keith Johnstone,
Impro: Improvisation and the Theatre