Reviews & Testimonials
A shop has forty reviews on the site and all forty are five stars, because the request only goes out to customers who did not contact support.
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Conversion has not moved. In the last research session somebody looked at the page and said the reviews looked fake.
They were not fake. They were selected, which produces the same result, because a wall of perfect scores is the one shape a suspicious shopper recognizes immediately.
Northwestern's Spiegel Research Center, working with PowerReviews in 2017, found purchase likelihood for a product with five reviews is around 270% higher than for a product with none. They also found the likelihood peaks somewhere in the 4.0 to 4.7 range and falls as ratings approach 5.0. The score that sells is not the highest one available.
Anatomy of a Review
The module's title joins two things that look alike on a page and carry very different weight.
Two Different Objects
A review is submitted by a customer and published whether or not the company likes it, alongside every other review, with a score attached.
A testimonial is a quote the company selected, edited for length, and placed where it helps. Nobody believes a testimonial is a random sample, which is fine as long as the page does not pretend otherwise. The mistake is styling a curated set of quotes to look like a review system, complete with stars, since that borrows credibility the content has not earned.
The Aggregate
Three parts describe the whole set, and showing one without the others is where most pages go wrong.
The score, the count of reviews behind it, and the distribution across the star levels. A score alone is unreadable: 5.0 means nothing until you know whether three people or three thousand produced it.
The Individual Review
Seven parts, and the last three are the ones usually missing.
The author, with whatever identity the platform can stand behind. The date. The score. The body. A verified badge, saying this person actually bought it. The version or variant reviewed, which matters for anything that changes. And the company's reply, where there is one.
What Each Part Is Doing
Every element is answering a suspicion the reader arrived with.
Is this real, answered by the verified badge and the author. Is this still true, answered by the date and the version. Is this typical, answered by the count and the distribution. Does this company care, answered by the reply. A page that shows a score and a body and nothing else has answered none of the four.
Pro tip: Look at your review section and mark which of those four suspicions it answers. Most answer one, and the one they answer is usually the least important.