a technique of highlighting preferential beliefs, if two groups are given letters and some are simply dropped for people to find, those who find and pick up the letters are more likely to place it in a letterbox which agrees with their own ideals and theories rather than the converse.

LOST LETTER PROCEDURE: "The lost letter procedure is an experimental design used to examine and highlight clearly the patterns in an individuals behaviours in line with their own theories and ideas."
Cite this page: N., Pam M.S., "LOST LETTER PROCEDURE," in PsychologyDictionary.org, April 7, 2013, https://psychologydictionary.org/lost-letter-procedure/ (accessed July 15, 2020).