The original assertion was that psychology works just fine in marketing and advertising, and you asked "does it really?" Here you say, "Sure, advertising works"

The original assertion was that psychology works just fine in marketing and advertising, and you asked "does it really?" Here you say, "Sure, advertising works". While quantitative data on how it works and how effective it is might be lacking, the point is that it does work. The remaining questions are of the "more study is needed to draw any conclusions" kinds of objections that the tobacco industry used to obfuscate the hazards of smoking and that the petrochemical industry uses today to prevent action on global warming. It's is this kind of uncertainty and doubt that I'm asserting is why so many people are still unclear about how much influence marketing and advertising have over their choices.