Sequential requests and organ donation.

The author investigated the effectiveness of the foot-in-the-door technique as a method of increasing participants' intention to become organ donors. The participants who agreed to a 1st request were presented with a larger request either immediately or 3 days later. The 2nd request was presented either by the same requester or by a different requester. Compared with a control group receiving only the 2nd request, a significant foot-in-the-door effect emerged in all conditions except 1 (same requester-immediate request), in which the participants showed neither more nor less intention to become organ donors than did the control group.