Fund-raising on the web: the effect of an electronic foot-in-the-door on donation

In an attempt to test the foot-in-the-door (FITD) technique in a computer-mediated communication context, 1,008 men and women taken at random in various e-mails lists were solicited to visit a web site for the profit of a humanitarian organization. In the FITD condition, subjects were first solicited to sign a petition form and, after that, they were solicited for a donation. In the control condition, the donation solicitation was formulated directly. In all cases, the formulation of the requests was manipulated by the order of the successive HTML pages of the site. Results show that the FITD procedure increases compliance to the final request.

Effect of a perfume on prosocial behavior of pedestrians

Several studies have shown that perfumes encourage prosocial behavior of people from whom help is requested in the street. Implicit requests for help were studied. On a pedestrian walk, a woman confederate, with or without a heavy perfume, walked by the subject while dropping a packet of paper handkerchiefs or a glove apparently without noticing. Results show that the confederate was warned more often when wearing a perfume.

Effect on tipping of barman drawing a sun on the bottom of customers' checks

Previous research has demonstrated that a pleasant drawing (a smiling face) on a restaurant bill increased the number of tips left by clients. A similar experiment was carried out using a drawing of the sun since it is known that tips increase on sunny days. The experiment was carried out in local bars and involved clients who have ordered an espresso coffee. Analysis showed that the drawing of the sun led clients to leave a tip more frequently than when this drawing is not present. The size of the tip left was also higher. The hypothesis of the creation of a positive frame of mind by this stimulus is discussed.