Foot-in-the-door (FITD) technique is a compliance tactic that involves getting a person to agree to a large request by first setting them up by having that person agree to a modest request. The foot-in-the-door technique succeeds owing to a basic human reality that social scientists call "successive approximations". Essentially, the more a subject goes along with small requests or commitments, the more likely that subject is to continue in a desired direction of attitude or behavioral change and feel obligated to go along with larger requests. FITD works by first getting a small 'yes' and then getting an even bigger 'yes.'