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From David Gaughran
This report was last updated 3/6/2024.
Refresh the report to view the most up-to-date data available:
Refresh the report to view the most up-to-date data available:
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Report Info:
Note: We only analyze "reviews" and ignore one-tap "ratings".
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Report Card
Fail Overall Grade
FAIL 
Unverified Purchases
Unverified PurchasesFAIL Overlapping Review History
Overlapping Review HistoryWARN Suspicious Reviewers
Suspicious ReviewersWARN Phrase Repetition
Phrase RepetitionPASS Rating Trend
Rating TrendPASS Word Count Comparison
Word Count ComparisonPASS Reviewer Ease
Reviewer EasePASS Brand Repeats
Brand RepeatsPASS Incentivized Reviews
Incentivized ReviewsPASS Deleted Reviews
Deleted ReviewsN/A Reviewer Participation
Reviewer Participation
Most Trusted Reviews
It was a good story and kept my interest! I ... [Go to full review]
Nov 20, 2012
100%
TRUST
TRUST
-
Verified Purchaser
-
Overlapping Review History: reviewed 1 of 9 top products -
Easy Grader (avg. rating: 4.8)
Critical Reviewer (avg. rating: 3.5)
Least Trusted Reviews
"Catalina Flores de la Pena's tongue got her in more ... [Go to full review]
May 11, 2013
0%
TRUST
TRUST
-
Unverified Purchaser -
Contains repetitive phrases (show)
-
Take-Back Reviewer (5 deleted Reviews; avg. rating: 4.8) -
Overlapping Review History: reviewed 1 of 9 top products
-
Easy Grader (avg. rating: 4.7)
Brand Repeater (2 of 26 reviews for this brand; avg rating: 5.0)
Never-Verified Reviewer
Analysis Details
Fail Unverified Purchases
Unverified Purchases
23 of the 187 total reviews for this product are unverified purchases. The unverified purchasers have rated this product an average of 4.3 while the verified purchasers have rated this product an average of 3.4. 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.
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.
Fail Overlapping Review History
Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:
<10% also reviewed:
Dead Wood (A Private Investigator Murder Mystery... by Dan Ames
<10% also reviewed:
The Parrot Talks in Chocolate (The Life and Times... by Everett Peacock
<10% also reviewed:
A Dead Red Heart (The Dead Red Mystery Series,... by RP Dahlke
<10% also reviewed:
Amazon Basics 12-Sheet Cross-Cut Paper, CD, and... by Amazon Basics
<10% also reviewed:
Just Add Trouble (Hetta Coffey Series, Book 3) by Jinx Schwartz
<10% also reviewed:
The Good Lawyer: A Novel by Thomas Benigno
<10% also reviewed:
The Gauguin Connection (Book 1) (Genevieve Lenard) by Estelle Ryan
<10% also reviewed:
Crime Czar: a Hard-Boiled New Orleans Legal... by Tony Dunbar
Approximately 30% of reviewers have substantial overlapping product review history. These reviewers have rated this product an average of 3.9 while the reviewers who have a more unique product review history rated this product an average of 3.3. 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 Suspicious Reviewers
Suspicious Reviewers
Take-Back Reviewers
Approximately 40% of 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, the discrepancy in ratings between the Take-Back Reviewers and reviewers who don't have any deleted reviews in their history isn't significant enough to rule out the possibility of it being due to random chance.
Warn 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
~4% of reviews
(4.5/5)
(4.5/5)
~4% of reviews
(4.5/5)
(4.5/5)
~6% of reviews
(4.7/5)
(4.7/5)
~4% of reviews
(4.5/5)
(4.5/5)
~4% of reviews
(4.5/5)
(4.5/5)
~4% of reviews
(4.0/5)
(4.0/5)
~4% of reviews
(5.0/5)
(5.0/5)
~13% of reviews
(3.8/5)
(3.8/5)
~4% of reviews
(5.0/5)
(5.0/5)
~6% of reviews
(5.0/5)
(5.0/5)
Approximately 75% of reviews use substantial repetitive phrases between them. This is an excessively large percentage which may indicate unnatural reviews.
Pass Rating Trend
Rating Trend
-
- <10%
- Created on high-volume days
We didn't notice any signals that would indicate reviews were created unevenly over time.
Read more about our Rating Trend test.
Read more about our Rating Trend test.
Pass Word Count Comparison
Word Count Comparison
-
- <10%
- Have an overrepresented word count
We didn't find any review word count groups that had a statistically significant greater concentration than what we'd expect to see in this category.
Read more about our Word Count Comparison test.
Read more about our Word Count Comparison test.
Pass 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, while the average ease score for reviewers in this category is 4.3.
4.0 Product's Average Ease Score
4.3 Category's Average Ease Score
Read more about our Reviewer Ease test.
Pass Brand Repeats
Brand Repeats
Brand Repeaters
Less than approximately 10% of 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.
-
- <10%
- Admitted to receiving an incentive
We didn't detect any reviews that used language indicating they were incentivized.
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.
Pass Deleted Reviews
Deleted Reviews
- 0
- Reviews have been deleted
We have not discovered any deleted reviews for this product.
There are a few limitations to keep in mind regarding the Deleted Reviews test:
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.