Latest developments on the portable people meter

The portable people meter (PPM) is a promising new media research tool that makes it possible to automatically track consumers' exposure to the electronic media.

Latest developments on the portable people meter

The U.S. market trial in Philadelphia

Robert H. PatchenArbitron IncandBrian Harris–KojetinArbitron Inc

INTRODUCTION

To say that radio and the other electronic media are undergoing rapid change is a gross...