Experiencing English 2, Unit 3 Advertising K Understanding the Text 2. What effects do the slogans by PSAs have on people? They testify to the Ad Council's power of its messages to make positive socia changes Passage B The Ad Council at a Glance FRNSWUCGExperiencing English 2, Unit 3 Advertising Passage B The Ad Council at a Glance Understanding the Text 2. What effects do the slogans by PSAs have on people? They testify to the Ad Council's power of its messages to make positive social changes