RT Journal Article SR Electronic T1 Evaluating Return on Investment of Multimedia Advertising with a Single-Source Panel: A Retail Case Study JF Journal of Advertising Research JO J Advert Res FD WARC SP 262 OP 270 DO 10.1017/S0021849904040309 VO 44 IS 3 A1 Joan Fitzgerald YR 2004 UL http://www.journalofadvertisingresearch.com/content/44/3/262.abstract AB Retail marketers' understanding of radio and television advertising campaigns' impact on retail store visits would be a major breakthrough in evaluating return on media investment. This article presents results from pilot research using Arbitron's Portable People Meter (PPM[sup SM], a mark of Arbitron Inc.)--a unique audience measurement system that enables radio, broadcast television and cable television usage, and retail store visits to be captured from a single-source national panel of consumers. The pilot research indicates that retail store visits correlated with media advertising exposure, illustrating the promise of a single-source research panel to measure ROI in terms of store visit behavior, an important driver of retailer financial results.