Rata cu care eficienta unei campanii de advetising scade odata cu trecerea timpului; de exemplu, o campanie de advertising lansata intr-o luna va avea un efect cu 50% mai redus in luna care urmeaza.
The rate at which the effectiveness of an advertising campaign diminishes with the passing of time; for example, an advertising campaign this month may have a carryover effect of >50 next month.
