Outliers: The Story of Success
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From Malcolm Gladwell
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Most Trusted Reviews
TRUST
- Verified Purchaser
- Take-Back Reviewer (7 deleted Reviews; avg. rating: 4.7)
- Overlapping Review History: reviewed 1 of 9 top products
- Easy Grader (avg. rating: 4.2)
Least Trusted Reviews
TRUST
- Unverified Purchaser
- Never-Verified Reviewer
- Take-Back Reviewer (1 deleted Review; avg. rating: 2.0)
- Brand Loyalist (2 of 4 reviews for this brand; avg rating: 2.0)
- Overlapping Review History: reviewed 1 of 9 top products
- Overrepresented Participation (posted 4 Reviews)
- Critical Reviewer (avg. rating: 2.5)
Analysis Details
We discovered a total of 6 deleted Reviews for this product, with an average rating of 4.3. Even though deleted reviews don't affect the average rating, the fact that action was taken to delete reviews raises some red flags about the integrity of the reviews for the product as whole.
There are a few limitations to keep in mind regarding the Deleted Reviews test:
- We don't have a magic ability to collect every single deleted review; we can only identify reviews as deleted if we collect them on one date and then notice they are no longer visible on a subsequent date.
- We have no information on reviews that were never published in the first place.
- We also don't know why these reviews were removed. It could be action from the platform, personal decision by the review author, part of an entire account closure, even some data error on our part, etc.
Brand Loyalists
18 of the 485 reviewers have reviewed multiple products but half or more of their reviews are for this brand. While this is more Brand Loyalists than we'd expect to see, it does not appear to have a significant impact on the overall rating.
One-Hit Wonders
143 of the 485 reviewers have only reviewed this product. While this is more One-Hit Wonders than we'd expect to see, it does not appear to have a significant impact on the overall rating.
Never-Verified Reviewers
111 of the 485 reviewers have never written a verified purchase review. While this is more Never-Verified Reviewers than we'd expect to see, it does not appear to have a significant impact on the overall rating.
Take-Back Reviewers
18 of the 485 reviewers have had at least one of their past reviews for another product deleted. While this is more Take-Back Reviewers than we'd expect to see, it does not appear to have a significant impact on the overall rating.
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- 84%
- From reviewers with an overrepresented participation
We see the following 2 participation groups with a statistically significant greater concentration than what we'd expect to see:In total, we found that 409 reviewers (or 85%) are within an overrepresented participation group. This is an excessively high number of reviewers in overrepresented participation groups.
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- 2%
- Created over 3 days
We counted 485 reviews for this product over the span of 3,424 days, an average of 0.1 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 2 or fewer reviews on any given day.
However, we see the following 3 days exceeding this threshold:In total, we found that 11 reviews were created on just 3 days. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
190 of the 485 total reviews for this product are unverified purchases. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Unverified purchases may be the result of Kindle Unlimited readers, buyers who didn't pay full price, or reviewers who did not purchase the product at Amazon. Read more about our Unverified Purchases test.
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- 0%
- Have an overrepresented word count
Read more about our Word Count Comparison test.
26 of the 485 total reviews for this product use substantial repetitive phrases between them. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
5% also reviewed:
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To Kill A Mockingbird by Harper Lee
4% also reviewed:
Thinking, Fast and Slow by Daniel Kahneman
3% also reviewed:
How To Develop Self-Confidence (Personal... by Dale Carnegie
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Bounce: The Myth of Talent and the Power of... by Matthew Syed
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The Odessa File by Frederick Forsyth
3% also reviewed:
1984 Nineteen Eighty-Four (Penguin Modern... by George Orwell
45 of the 485 reviewers have substantial overlapping product review history. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
4.3 Product's Average Ease Score
4.2 Category's Average Ease Score
Read more about our Reviewer Ease test.
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- 0%
- Admitted to receiving an incentive
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.