What promotional claim was made about Frayer's Aspirin?

The promotional claim that "Fifty million Americans can't be wrong" employs a common persuasive technique known as bandwagon appeal. This strategy suggests that because many people are using Frayer's Aspirin, it must be a good choice. By asserting that a large number of Americans endorse the product, the claim aims to create a sense of social proof, implying that the popularity of the product indicates its quality and reliability. This type of promotion seeks to encourage potential customers to feel confident in their choice by presenting the idea that they would be joining a successful group of users.

Other promotional claims might suggest superiority or benefit in different ways, but the specific claim about the endorsement from a large number of Americans effectively capitalizes on the psychological tendency to follow the crowd, making it particularly impactful.