Arbitron Reports PPM Trial Results, Prepares Broadcasters for “Currency Change.” - September 26, 2005 --- Michael Hedges September 26, 2005 The US media research company shared results from the extensive Houston, Texas trials. Measured with the Personal People Meter (PPM) people “tune into more stations more frequently but they listen for shorter periods of time,” said Arbitron/PPM President Pierre Bouvard. This was no real surprise as earlier Arbitron test results were similar. And, if broadcasters bothered to ask, electronic measurement for radio in Switzerland, now in its fifth year, has shown the same patterns.