... duplication analysis to radio listening. As radio markets are believed to have many partitions, the paper considers whether an un‐partitioned duplication analysis provides an adequate description of market structure. Design/methodology/approach The paper reports the results of a weekly radio diary...

...Peter C. Verhoef; Janny C. Hoekstra; Marcel van Aalst Radio is becoming increasingly popular as an advertising medium. At the same time, more and more companies are integrating direct marketing in their communication strategies. Considers the influence of the day of the week, the time of the day...