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From Harlan Coben 
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Warn Unnatural reviews possible
Original Rating:
2,228 Reviews
Adjusted Rating:
1,645 Reviews
Rank in: United States
| 75% |
| 82% |
View/Edit Adjustment 
Report Card
Click a test to jump to details
FAIL 
Suspicious Reviewers
Suspicious ReviewersFAIL 
Reviewer Ease
Reviewer EaseFAIL 
Phrase Repetition
Phrase RepetitionWARN 
Deleted Reviews
Deleted ReviewsWARN 
Rating Trend
Rating TrendPASS 
Unverified Purchases
Unverified PurchasesPASS 
Word Count Comparison
Word Count ComparisonPASS 
Overlapping Review History
Overlapping Review HistoryPASS 
Reviewer Participation
Reviewer ParticipationPASS 
Brand Repeats
Brand RepeatsPASS 
Incentivized Reviews
Incentivized Reviews
Most Trusted Reviews
Longtime readers of Harlan Coben novels will be pleased with ... [Go to full review]
Nov 22, 2016
100%
TRUST
TRUST
-
Unverified Purchaser
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Take-Back Reviewer (5 deleted reviews; avg. rating: 3.4) -
Brand Repeater (4 of 1304 reviews for this brand; avg rating: 3.5) -
Overlapping Review History: reviewed 6 of 9 top products -
Critical Reviewer (avg. rating: 3.6)
Least Trusted Reviews
Happy that Myron and Win are back. Excellent to the ... [Go to full review]
Oct 14, 2016
0%
TRUST
TRUST
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Verified Purchaser -
Created on a high volume day -
Overrepresented word count (11 words) -
Contains repetitive phrases (show)
-
Critical Reviewer (avg. rating: 3.6)
Analysis Details
Fail Suspicious Reviewers
Suspicious Reviewers
One-Hit Wonders
477 of the 2,228 reviewers have only reviewed this product. While this is more One-Hit Wonders than we'd expect to see, the discrepancy in ratings between the One-Hit Wonders and reviewers who have posted more than one review isn't significant enough to rule out the possibility of it being due to random chance.
Take-Back Reviewers
537 of the 2,228 reviewers have had at least one of their past reviews for another product deleted. This is an excessively large percentage of Take-Back Reviewers which may indicate unnatural reviews.
Fail Reviewer Ease
Reviewer Ease
The ease score is the average rating for all reviews that a given reviewer submits. The average ease score for reviewers of this product is 4.4, while the average ease score for reviewers in this category is 4.2. Based on our statistical modeling, the discrepancy in average rating between these two groups is significant enough to believe that the difference is not due to random chance, and may indicate that there are unnatural reviews.
4.4 Product's Average Ease Score
4.2 Category's Average Ease Score
Read more about our Reviewer Ease test.
Fail Phrase Repetition
Phrase Repetition
Reviews that contain one of these phrases are NOT necessarily devalued; read more about how this test works here.
Common Phrases in Reviews:
Show MoreShow Less
61 reviews
103 reviews
42 reviews
72 reviews
25 reviews
29 reviews
23 reviews
45 reviews
Common Phrases in Titles:
66 reviews
43 reviews
38 reviews
149 of the 2,228 total reviews for this product use substantial repetitive phrases between them. These reviewers have rated this product an average of 4.8 while reviews without substantial repetitive phrases rated this product an average of 4.5. Based on our statistical modeling, the discrepancy in average rating between these two groups is significant enough to believe that the difference is not due to random chance, and may indicate that there are unnatural reviews.
Warn Deleted Reviews
Deleted Reviews
We discovered a total of 4 deleted reviews for this product, with an average rating of 4.8. 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.
4.8 average rating of deleted reviews
Read more about our Deleted Reviews test.
Warn Rating Trend
Rating Trend
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- 45%
- Created over 31 days
We counted 2,228 reviews for this product over the span of 187 days, an average of 11.9 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 25 or fewer reviews on any given day.
However, we see the following 31 days exceeding this threshold:In total, we found that 1,002 reviews were created on just 31 days. This is an excessively high number of reviews submitted on these high volume days.
Pass Unverified Purchases
Unverified Purchases
377 of the 2,228 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.
Pass Word Count Comparison
Word Count Comparison
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- 21%
- Have an overrepresented word count
In the graph above, we can see the distribution of review word counts for this product and the expected distribution for this category. We see the following 1 group with a statistically significant greater concentration than what we'd expect to see:In total, we found that 463 reviews (or 21%) are within an overrepresented word count group. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Pass Overlapping Review History
Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:
8% also reviewed:
The Girl on the Train: A Novel by Paula Hawkins
6% also reviewed:
The Last Mile (Amos Decker series) by Grand Central Publishing
5% also reviewed:
The Escape (John Puller Series Book 3) by David Baldacci
4% also reviewed:
No Man's Land (John Puller Series) by David Baldacci
3% also reviewed:
Trunk Music by Eric Overmyer
3% also reviewed:
Mr. Mercedes: A Novel (The Bill Hodges Trilogy) by Stephen King
3% also reviewed:
My Sister's Grave (The Tracy Crosswhite Series... by Robert Dugoni
Does not include products
from the same brand
from the same brand
519 of the 2,228 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.
Pass Reviewer Participation
Reviewer Participation
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- 0%
- From reviewers with an overrepresented participation
We didn't find any participation groups that had a statistically significant greater concentration than what we'd expect to see in this category.
Read more about our Reviewer Participation test.
Read more about our Reviewer Participation test.
Pass Brand Repeats
Brand Repeats
Brand Repeaters
24 of the 2,228 reviewers have reviewed other products for this brand. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Pass Incentivized Reviews
Incentivized Reviews
On Oct 3, 2016, Amazon prohibited incentivized reviews, however we still test for them since there are still millions in our dataset.
5 of the 2,228 total reviews for this product admitted to receiving a free or discounted product in exchange for a review. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Read more about our Incentivized Reviews test, or check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.