The Enduring Appeal of the Testimonial

Image of Scott Baradell
Scott Baradell
Published: Aug 10, 2020
Last Updated: Jun 11, 2021

Testimonials are appeals from third parties designed to build trust in your brand. The term "testimonial" was popularized in advertising in the United States in the 19th century -- but the concept has been around much longer, and has only become more important to marketers over time. Today, including testimonials on your website is an important trust signal for earning credibility with your visitors.

In this post, we'll share:

A Brief History of the Testimonial Appeal

In some ways, we can trace the concept of the testimonial to the work of Aristotle more than 2,000 years ago.  Aristotle taught that a speaker's ability to persuade an audience is rooted in appeals to ethos (credibility), logos (logic) and pathos (emotion).  Customer and influencer testimonials primarily persuade through ethos. The source providing them is key.

With testimonials, if it's not someone the audience can identify with, respect or believe, what they say doesn't matter. That's why the vague testimonial quotes on many websites (e.g., "Great product! -- Andrew K., marketing VP") have virtually zero impact.

Testimonials go back centuries. The word "testimonial" has been part of English usage since the 15th century, meaning "a statement given under oath" or a "written recommendation of someone's worth or character." 

You can find testimonials, often in the form of published letters, in early American newspapers, touting everything from medicinal cures to farm products. In fact, these testimonial ads sometimes included the actual home address of the person leaving the testimonial. That's some serious ethos-building. 

The Difference Between Website Testimonials and Case Studies

While website testimonials are like case studies in appealing first to ethos, testimonials tend to rely more on pathos while case studies are based on logos. It's a function of length more than anything else.

There's an old saying that "the more you tell, the more you sell," and certainly this is the approach of the case study. The case study shows a specific use case of your product or service, details the results delivered and goals met, and includes an endorsement from your customer. That's a logic-based appeal.

Testimonials, on the other hand, go for quick impact on people scanning your website. The most effective testimonial quotes speak to results, but do so in the context of the feelings those results produced. So the best testimonials persuade through emotion. This appeal can be communicated through words, but also with images --such as the expressive faces of your customers showing happiness, relief, joy or other emotions.

More than 70 percent of consumers say testimonials increase their trust in a business, and the more testimonials the better -- as studies show that a higher number of customer quotes correlates with a higher visitor conversion rate. 

Six Common Sources of Testimonial Appeals

The form and function of testimonials vary based on their source. All demonstrate credibility to buyers in different ways, and all can appear as  website trust signals or in online or offline advertising.  These include:

  1. Celebrity Testimonials
  2. Influencer Testimonials
  3. Expert Testimonials
  4. "Pepsi Challenge" Testimonials
  5. Customer Testimonials
  6. First-Party or Embedded Review Testimonials

Celebrity Testimonials

As a form of celebrity endorsement, testimonials represent words directly from the celebrity's mouth in service to a brand. The first high-paid celebrity testimonials in the United States came from sports stars like Babe Ruth, who endorsed Old Gold cigarettes with the testimonial quote, "Old Gold's mildness and smoothness marked it 'right off the bat' as the best." Ruth claimed to have performed a blind taste test to arrive at this conclusion.

Celebrity testimonials tend to be most effective when the consumer believes the celebrity is an actual user of the product, rather than someone just doing it for the money. It also adds credibility when the product ties to the celebrity's line of work, such as sporting equipment for a professional athlete or beauty products for a fashion model.

babe ruth testimonial appeal

Influencer Testimonials

When many people think of an influencer, they picture camera-friendly 20-somethings documenting their glamorous lifestyles on TikTok or Instagram. And certainly these influencers can be effective in providing testimonials for beauty and lifestyle products, travel destinations and more. But the opportunities for influencer testimonials extend far beyond these examples, into virtually any industry niche, whether B2B or B2C. Finding the social media influencers whose testimonials can move the needle for your brand can help you reach your buyers in a targeted and credible way.


Expert Testimonials

The "expert" in an expert testimonial can be a highly knowledgeable influencer—such as financial author Dave Ramsey, who endorses financial services providers with his RamseyTrusted trust badge.  Or the expert's credibility may come by virtue of their role—a doctor wearing a white laboratory coat, for example. Expert testimonials can make buyers feel safer when they are buying a product for the first time.  


"Pepsi Challenge" Testimonials

The Pepsi Challenge began in 1975 as an advertising campaign in which Pepsi asked consumers to choose between Pepsi and Coke in a blind taste test. The campaign was so popular that it's since become synonymous with "man-on-the street" testimonials, in which an interview subject is asked to try a new product and ends up endorsing it. While these testimonials offer the immediacy of  witnessing the consumer's first experience with a product, they often carry less credibility because the brand conducting the test controls the results.


Customer Testimonials

As powerful as testimonials from celebrities, influencers and experts can be, in general the most persuasive testimonials come from a product's customers, especially for B2B brands. For a visitor scanning your website, testimonials are a quick way to showcase your happy customers—and the more the merrier, to take full advantage of the bandwagon effect. Remember, however, that your testimonials will lose a lot of credibility if they do not include the customer's full name, company and (ideally) photo. 


First-Party or Embedded Review Testimonials

Website testimonials can be solicited directly in the form of first-party or embedded reviews. Unlike reviews that appear on third-party sites like Yelp or G2, first-party and embedded reviews appear on your own website.

Embedded reviews are views you pull in from third-party review sites by embedding them on your site. First-party reviews are reviews you collect yourself, typically in automated fashion during the online customer experience. They've been common on high-volume e-commerce sites for years -- but now restaurants, consumer brands and other businesses are getting in on the action.

Timberland reviews

More Timberland reviews

Three Tips for Collecting Customer Testimonials

Now that you know the enduring appeal of the testimonial, what's a good way to begin incorporating testimonials in your own company's marketing program? The first step is to begin collecting them, starting with those buyers who best represent your ideal customer or use case.

  1. Include a testimonial opportunity as part of the customer experience. If you sell your product online, it's easy to include a review request in the user experience—whether for a Google review, review site review, or first-party review. If you're a brick-and-mortar business, you can simply include a request for a review on a table card in restaurants, or as a question the person at the register asks at the auto repair shop. 
  2. Follow up by email or text in an appropriate timeline. With many purchases, particularly in the B2B space, asking for a testimonial review at the time of purchase is premature. Customers need time to use and evaluate the product. For buyers like these, following up on a regular timetable with an NPS survey that measures the user's satisfaction level is important. In addition to identifying issues you might want to address with customer service, an NPS survey reveals happy customers who you can ask for a testimonial or review. Just remember to keep Google's admonitions against review gating in mind in developing your workflow. 
  3. Automate testimonial requests completely. If collecting testimonials sounds burdensome or like something you might put off doing, it doesn't have to be if you set up automated testimonial collection on the front end. As a great example of this, read how customer analytics company Baremetrics does it.
You don't have to be Aristotle to recognize the power of testimonials from customers, celebrities, influencers and experts. People trust what other people say about you more than what you say about yourself—and testimonials are one of the best ways to showcase these third-party endorsements.

Your Website Should Feel Like Home to Your Visitors.

Learn More About Idea Grove's User Experience Solution

Leave a Comment

Blog posts

Related Articles

Image of Scott Baradell
Scott Baradell

Add Online Reviews to Your Website with Repuso

One of the most trusted forms of third-party validation is customer reviews of your business. 


Read more
Image of Scott Baradell
Scott Baradell

Are You Updating Your Website's Content Frequently Enough?

Say a potential lead has a question about a service your company offers. Like most of us, they...

Read more