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		| Darren  Filson | 
	
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		| ''Dissecting decline in the economy-wide advertising intensity 1997-2017'' | 
	
		| ( 2023, Vol. 43 No.3 ) | 
	
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		| The macro-level advertising-to-sales ratio of U.S.-based advertising firms is stable at approximately 3% prior to 2001 and then drops substantially (primarily during 2001-2005) to approximately 2% by 2013-2017. A decomposition shows that changes in advertising intensities in four vertical chains – food, drugs, computers, and tobacco – are critical contributors to the drop. I explore tentative explanations. It is unlikely that the diffusion of the Internet is wholly responsible; food, drugs, and tobacco are among the industries least impacted by ecommerce. Category-specific factors likely matter: commoditization, the rise of warehouse club/supercenters, the changing nature of new products, and public policies and self-regulation. | 
	
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		| Keywords: advertising-to-sales,  aggregate advertising,  decomposition,  macro advertising | 
	
		| JEL: M3 - Marketing and Advertising: General L1 - Market Structure, Firm Strategy, and Market Performance: General
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		| | Manuscript Received : May 30 2023 |  | Manuscript Accepted : Sep 30 2023 | 
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