Dr. Barbara Flagg, Director of Multimedia Research, implemented a summative evaluation of "Talk of the Nation: Science Friday." a weekly two-hour science talk show hosted by science correspondent Ira Flatow. The evaluation focused on what demographic or background characteristics relate to whether or not one listens to Science Friday and to frequency of listening; what effects the series has on listeners and what kind of actions the series has prompted in listeners. Surveys were mailed to random names, stratified by gender, drawn from the member subscriber lists of public radio stations in