Because Extension seminars are costly in preparation and delivery, questions about the costs and effectiveness of various methods are important to consider. Interactive devices are becoming increasingly available to Extension professionals. One such device, OptionFinder®, utilizes individual wireless remote keypads and a control station, manned by the lecturer or an assistant. It is believed to increase audience participation and information retention. The lecturer can assess the audiences' understanding within seconds by asking multiple choice or true/false questions. The study described here examined the cost and value, in terms of knowledge retention, of such a system compared with other workshop methods.

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