Report: PPM ‘Assumptions’ May Affect Data.
July 20, 2009
According to Radio Ink Magazine, a report by Dr. Barry Blesser, director of engineering for 25-Seven Systems, says that “hidden assumptions” made by the designers of Arbitron’s Portable People Meter system may be affecting ratings results.
Blesser says he has been asked by radio engineers to comment on the PPM, and writes, “Inquirers were particularly interested in possible technical explanations of why some program formats on some stations have received dramatically lower audience ratings compared to that of the old diary system.”
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