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Galley proof"A typeset copy of an ad or editorial material, before it is made into pages for final production."
Galvanometer testA research method that measures physiological changes in consumers when asked a question or shown some stimulus material (such as an ad).
Gatefold"Double or triple-size pages, generally in magazines, that fold out into a large advertisement."
Generic brandProducts not associated with a private or national brand name.
GravureA printing process that uses an etched printing cylinder.
Green advertising"Advertising that promotes a product or service's ability to help or, more likely, not hurt the environment."
Grid card"A broadcast media rate card that lists rates on a grid, according to the time periods that might be selected for the ad."
Gross audience"The audiences of all vehicles or media in a campaign, combined. Some or much of the gross audience may actually represent duplicated audience."
Gross Impressionstotal number of impression opportunities an out-of-home structure or advertising Space can produce measured against a target audience in a market. Cumulative impressions can be combined to reflect an entire out-of-home campaign.
Gross impressionsTotal number of unduplicated people or households represented by a given media schedule.
Gross Margin"Gross sales - Cost of goods sold = Net sales
Gross Rating Points (GRP)"Gross Rating Points (GRP) measure the total volume of delivery of your message to your target audience. It is equal to the percent Reach to your target audience times the Frequency of exposure. To arrive at your total Gross Rating Points, add the individual ratings for each media vehicle you are using. You may also get GRP by dividing your gross Impressions by the population base and multiplying the answer by 100. "
Guaranteed circulationA media rate that comes with a guarantee that the publication will achieve a certain circulation.
GutterThe inside margins of two pages that face each other in a print publication.