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Devoted in Death
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From J. D. Robb
This report was last updated 9/15/2017.
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Report Info:
Last Updated: Sep 15, 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 Brand Repeats
FAIL Suspicious Reviewers
FAIL Reviewer Ease
FAIL Word Count Comparison
FAIL Phrase Repetition
FAIL Overlapping Review History
WARN Rating Trend
WARN Reviewer Participation
PASS Unverified Purchases
PASS Incentivized Reviews
PASS Deleted Reviews
Most Trusted Reviews
Her last novel was somewhat tedious to read but this ... [Go to full review]
Jan 4, 2016
100%
TRUST
TRUST
- Verified Purchaser
- Brand Repeater (3 of 80 reviews for this brand; avg rating: 4.3)
- Critical Reviewer (avg. rating: 4.2)
Least Trusted Reviews
I love all the JD Robb books.. You fall in ... [Go to full review]
Nov 16, 2015
0%
TRUST
TRUST
- Verified Purchaser
- Created on a high volume day
- Contains repetitive phrases (show)
- Brand Loyalist (2 of 4 reviews for this brand; avg rating: 5.0)
- Overlapping Review History: reviewed 2 of 9 top products
- Overrepresented Participation (posted 4 Reviews)
- Easy Grader (avg. rating: 5.0)
Analysis Details
Fail Brand Repeats
Brand Loyalists
87 of the 1,906 reviewers have reviewed multiple products but half or more of their reviews are for this brand. This is an excessively large percentage of Brand Loyalists which may indicate unnatural reviews.
Fail Suspicious Reviewers
Take-Back Reviewers
89 of the 1,906 reviewers have had at least one of their past reviews for another product deleted. The Take-Back Reviewers have rated this product an average of 4.8 while the reviewers who don't have any deleted reviews in their history have rated this product an average of 4.6. 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 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 4.5, 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.
4.5 Product's Average Ease Score
4.2 Category's Average Ease Score
Read more about our Reviewer Ease test.
Fail Word Count Comparison
-
- 43%
- 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 2 groups with a statistically significant greater concentration than what we'd expect to see:In total, we found that 814 reviews (or 43%) are within an overrepresented word count group. These reviews have rated this product an average of 4.8, while all other reviews have 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.
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
50 reviews
66 reviews
75 reviews
33 reviews
22 reviews
45 reviews
25 reviews
20 reviews
31 reviews
77 reviews
Common Phrases in Titles:
32 reviews
170 of the 1,906 total reviews for this product use substantial repetitive phrases between them. These reviewers have rated this product an average of 4.9 while reviews without substantial repetitive phrases rated this product an average of 4.6. 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 Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:
9% also reviewed:
Concealed in Death by J. D. Robb
9% also reviewed:
Thankless in Death by Robb, J. D.
8% also reviewed:
The Liar by Nora Roberts
8% also reviewed:
The Obsession by Nora Roberts
5% also reviewed:
Blood Magick (The Cousins O'Dwyer Trilogy,... by Nora Roberts
5% also reviewed:
Stars of Fortune (Guardians Trilogy) by Nora Roberts
5% also reviewed:
The Collector by Nora Roberts
4% also reviewed:
Shadow Spell (The Cousins O'Dwyer Trilogy) by Nora Roberts
Does not include products
from the same brand
from the same brand
671 of the 1,906 reviewers have substantial overlapping product review history. These reviewers have rated this product an average of 4.7 while the reviewers who have a more unique product review history rated this product an average of 4.6. 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
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- 47%
- Created over 42 days
We counted 1,906 reviews for this product over the span of 719 days, an average of 2.7 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 9 or fewer reviews on any given day.
However, we see the following 42 days exceeding this threshold:In total, we found that 887 reviews were created on just 42 days. This is an excessively high number of reviews submitted on these high volume days.
Warn Reviewer Participation
-
- 67%
- 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 1284 reviewers (or 67%) are within an overrepresented participation group. This is an excessively high number of reviewers in overrepresented participation groups.
Pass Unverified Purchases
262 of the 1,906 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 Incentivized Reviews
On Oct 3, 2016, Amazon prohibited incentivized reviews, however we still test for them since there are still millions in our dataset.
3 of the 1,906 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. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.
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.