ln drafting the promotion schedules, thought should be given to the most effective timing of the various elements. Experience indicates that if printed materials are received too far in advance, people put them aside and forget about them. No immediate action of any kind is required. On the other hand, if the notice is too short, the prospective participants may either have other plans already made or feel that they need more time to think it over. The right time for a given program has to be determined by trial and error, but about three weeks’ advance notice for the printed material; seems to be effective in most cases.