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Jar of Hearts
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From Hillier, Jennifer
This report was last updated 3/24/2020.
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Report Info:
Note: We only analyze "reviews" and ignore one-tap "ratings".
Top products in Thrillers & Suspense with authentic reviews:
Report Card
Warn Overall Grade
FAIL Suspicious Reviewers
FAIL Phrase Repetition
WARN Rating Trend
WARN Unverified Purchases
WARN Incentivized Reviews
WARN Overlapping Review History
PASS Word Count Comparison
PASS Reviewer Participation
PASS Reviewer Ease
PASS Brand Repeats
PASS Deleted Reviews
Most Trusted Reviews
If you enjoy really grim thrillers, you'll like this. There's ... [Go to full review]
May 6, 2018
100%
TRUST
TRUST
- Verified Purchaser
- Overrepresented word count (122 words)
- Take-Back Reviewer (152 deleted Reviews; avg. rating: 3.7)
- Critical Reviewer (avg. rating: 3.7)
Least Trusted Reviews
This was one of my favorite books of 2018. I ... [Go to full review]
Jun 26, 2018
0%
TRUST
TRUST
- Unverified Purchaser
- Created on a high volume day
- Overrepresented word count (166 words)
- Contains repetitive phrases (show)
- Never-Verified Reviewer
- Take-Back Reviewer (1 deleted Review; avg. rating: 5.0)
- Overlapping Review History: reviewed 2 of 9 top products
- Critical Reviewer (avg. rating: 4.2)
Analysis Details
Fail Suspicious Reviewers
Never-Verified Reviewers
19 of the 446 reviewers have never written a verified purchase review. The Never-Verified Reviewers have rated this product an average of 4.8 while the reviewers who have written at least one verified purchase review rated this product an average of 4.4. 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.
Take-Back Reviewers
201 of the 446 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.
Fail 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 reviews
(4.5/5)
(4.5/5)
3 reviews
(4.3/5)
(4.3/5)
21 reviews
(4.4/5)
(4.4/5)
17 reviews
(4.4/5)
(4.4/5)
45 reviews
(4.5/5)
(4.5/5)
6 reviews
(4.5/5)
(4.5/5)
6 reviews
(4.5/5)
(4.5/5)
23 reviews
(4.6/5)
(4.6/5)
9 reviews
(4.6/5)
(4.6/5)
18 reviews
(4.3/5)
(4.3/5)
Common Phrases in Titles:
14 reviews
(4.4/5)
(4.4/5)
14 reviews
(4.9/5)
(4.9/5)
3 reviews
(5.0/5)
(5.0/5)
232 of the 446 total reviews for this product use substantial repetitive phrases between them. These reviewers have rated this product an average of 4.6 while reviews without substantial repetitive phrases rated this product an average of 4.3. 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 Rating Trend
-
- 42%
- Created over 15 days
We counted 446 reviews for this product over the span of 686 days, an average of 0.7 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 5 or fewer reviews on any given day.
However, we see the following 15 days exceeding this threshold:In total, we found that 188 reviews were created on just 15 days. This is an excessively high number of reviews submitted on these high volume days.
Warn Unverified Purchases
339 of the 446 total reviews for this product are unverified purchases. While this is a higher percentage of unverified purchases than we'd expect to see, the discrepancy in ratings between the unverified purchases and verified purchases isn't significant enough to rule out the possibility of it being due to random chance.
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.
59 of the 446 total reviews for this product admitted to receiving a free or discounted product in exchange for a review. This is more than we would expect see; the presences of at least one incentivized review indicates that there may be more, since not all reviewers will disclose that they had received an incentive to post a 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.
Warn Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:
27% also reviewed:
Anonymous Girl by Greer Hendricks
21% also reviewed:
The Wife Between Us: A Novel by Greer Hendricks
18% also reviewed:
The Escape Room by Megan Goldin
17% also reviewed:
The Other Woman: A Novel by Sandie Jones
15% also reviewed:
The Silent Patient by Alex Michaelides
14% also reviewed:
Something in the Water: A Novel by Catherine Steadman
13% also reviewed:
Things You Save in a Fire: A Novel by Katherine Center
13% also reviewed:
After Anna by Lisa Scottoline
11% also reviewed:
The Woman in the Window: A Novel by A. J Finn
241 of the 446 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
-
- 24%
- 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 105 reviews (or 24%) 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
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- 18%
- From reviewers with an overrepresented participation
We see the following 1 participation group with a statistically significant greater concentration than what we'd expect to see:In total, we found that 82 reviewers (or 18%) are within an overrepresented participation group. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
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 4.3, while the average ease score for reviewers in this category is 4.3.
4.3 Product's Average Ease Score
4.3 Category's Average Ease Score
Read more about our Reviewer Ease test.
Pass Brand Repeats
Brand Repeaters
13 of the 446 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.