RT Journal Article SR Electronic T1 Using TV Daypart ‘Double Jeopardy Effects’ to Boost Advertising Efficiency JF Journal of Advertising Research JO J Advert Res FD WARC SP 43 OP 51 DO 10.2501/JAR-41-6-43-51 VO 41 IS 6 A1 Walter S. McDowell A1 Steven J. Dick YR 2001 UL http://www.journalofadvertisingresearch.com/content/41/6/43.abstract AB Several TV audience studies have revealed a ‘Double Jeopardy effect’ whereby highly rated programs generate not only more viewers but also disproportionately more loyal viewers than lower-rated programs. In these cases, loyalty was measured as weekly or daily repeat viewing of an individual program. This study expands on prior work by introducing a different operationalization of audience loyalty, namely audience turnover revealed within multi-hour dayparts. By concentrating on continuous audience retention, the researchers demonstrate how this approach could yield new media-buying strategies in terms of boosting frequency of exposure without sacrificing reach. Over 100 Nielsen diary-based sweep markets were analyzed to confirm that a double-jeopardy effect does in fact exist using this different methodology.