“Researchers have shown that if the conditions are right, subliminal advertising to promote a brand can be made to work.” And the cumulative effect of ads builds up in our brains. “Earlier this month, the Archives of Pediatrics and Adolescent Medicine published a report showing that for each additional hour per day that a child watched television an average of one additional request was made for an advertised product. The effect of the commercials on children lasted up to 20 weeks.”