Well, this abstract says it’s about 20% effective over not advertising but this is a meta analysis and isn’t focused exclusively on internet ads.
The baked in biases being that the authors are “a German chaired professor of marketing at the European University Viadrina in Frankfurt (Oder), Germany” and his research assistant.
Well, this abstract says it’s about 20% effective over not advertising but this is a meta analysis and isn’t focused exclusively on internet ads.
The baked in biases being that the authors are “a German chaired professor of marketing at the European University Viadrina in Frankfurt (Oder), Germany” and his research assistant.