Carl Mela, a professor in Duke's Fuqua School of Business, says about 95% of people still watch television live and cannot fast forward through the commercials. Even those without a DVR can skip commercials by using the breaks for other purposes. While viewers fast-forwarded through about 70% of the commercials in shows they recorded, they still watch the screen to know where to resume play, meaning, they are still being exposed to the advertisements.
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The study's authors tracked purchases of new products, advertised products and store brands across 50 categories, as well as the viewing behavior of those with the DVRs. No matter how the researchers looked at it, DVRs did not affect what people bought. The survey was in partnership with Information Resources Inc. and TiVo. Mela and colleagues from The University of Chicago and Tilburg University conducted a three-year field study.