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That Darkness (A Gardiner and Renner Novel)
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From Lisa Black
This report was last updated 7/20/2017.
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Report Info:
Last Updated: Jul 20, 2017
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Note: We only analyze "reviews" and ignore one-tap "ratings".
Top products in United States with authentic reviews:
Report Card
Fail Overall Grade
FAIL Rating Trend
FAIL Suspicious Reviewers
WARN Unverified Purchases
WARN Incentivized Reviews
WARN Phrase Repetition
WARN Overlapping Review History
PASS Word Count Comparison
PASS Reviewer Participation
PASS Reviewer Ease
PASS Brand Repeats
PASS Deleted Reviews
Most Trusted Reviews
I did not like this book at all. Very disappointed. [Go to full review]
Aug 9, 2016
100%
TRUST
TRUST
- Verified Purchaser
- Take-Back Reviewer (1 deleted Review; avg. rating: 5.0)
- Critical Reviewer (avg. rating: 4.2)
Least Trusted Reviews
I like Maggie as a character, but she often seems ... [Go to full review]
Apr 26, 2016
0%
TRUST
TRUST
- Unverified Purchaser
- Created on a high volume day
- Admitted to receiving an incentive
- Take-Back Reviewer (13 deleted Reviews; avg. rating: 4.6)
- Overlapping Review History: reviewed 1 of 9 top products
- Critical Reviewer (avg. rating: 4.1)
Analysis Details
Fail Rating Trend
-
- 42%
- Created over 4 days
We counted 104 reviews for this product over the span of 479 days, an average of 0.2 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 3 or fewer reviews on any given day.
However, we see the following 4 days exceeding this threshold:In total, we found that 44 reviews were created on just 4 days. The reviews on these high volume days have rated this product an average of 4.2 while reviews from other days have rated this product an average of 3.7. 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.
Fail Suspicious Reviewers
Take-Back Reviewers
25 of the 104 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.
Warn Unverified Purchases
89 of the 104 total reviews for this product are unverified purchases. This is an excessively large percentage of unverified purchases and it may indicate 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.
Warn Incentivized Reviews
On Oct 3, 2016, Amazon prohibited incentivized reviews, however we still test for them since there are still millions in our dataset.
30 of the 104 total reviews for this product admitted to receiving a free or discounted product in exchange for a review. This is an excessively large percentage of incentivized reviews which may indicate unnatural reviews.
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.
Warn Phrase Repetition
Reviews that contain one of these phrases are NOT necessarily devalued; read more about how this test works here.
65 of the 104 total reviews for this product use substantial repetitive phrases between them. This is an excessively large percentage which may indicate unnatural reviews.
Warn Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:
26% also reviewed:
The Murderer's Daughter: A Novel by Kellerman, Jonathan
21% also reviewed:
The Girl Before: A Novel by JP Delaney
20% also reviewed:
The Widow by Fiona Barton
19% also reviewed:
Far From True: A Promise Falls Novel (Promise... by Linwood Barclay
19% also reviewed:
Playing with Fire by Tess Gerritsen
18% also reviewed:
Broken Promise: A Thriller by Barclay, Linwood
18% also reviewed:
Most Wanted by Lisa Scottoline
17% also reviewed:
American Greetings Funny Cake Is for Wussies... by American Greetings
Does not include products
from the same brand
from the same brand
53 of the 104 reviewers have substantial overlapping product review history. While this is more than we'd expect to see, it does not appear to have a significant impact on the overall rating.
Pass Word Count Comparison
-
- 27%
- 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 28 reviews (or 27%) 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 Reviewer Participation
-
- 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 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 4.2, while the average ease score for reviewers in this category is 4.2.
4.2 Product's Average Ease Score
4.2 Category's Average Ease Score
Read more about our Reviewer Ease test.
Pass Brand Repeats
Brand Repeaters
5 of the 104 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 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.