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Warum die nettesten Männer die schrecklichsten Frauen haben ...: ... und die netten Frauen leer...
More product info From Sherry Argov

39% of potentially unnatural reviews removed (why?)
Adjusted:
Jump to Report Card


Report Card

Fail Overall Grade
FAIL Unverified Purchases
FAIL Suspicious Reviewers
FAIL Word Count Comparison
FAIL Phrase Repetition
FAIL Overlapping Review History
PASS Rating Trend
PASS Reviewer Ease
PASS Brand Repeats
PASS Incentivized Reviews
PASS Deleted Reviews
N/A Reviewer Participation

Most Trusted Reviews

Dieses Buch ist oberflächlich und fad geschrieben.Was der Titel interessantes ... [Go to full review]
Apr 27, 2006      
100% TRUST
  • Verified Purchaser
  • Take-Back Reviewer (1 deleted Review; avg. rating: 5.0)
  • Critical Reviewer (avg. rating: 3.6)


Least Trusted Reviews

0/5
User did not leave written text for this review. [Go to full review]
Dec 31, 1969      
0% TRUST
  • Unverified Purchaser
  • Overrepresented word count (0 words)
  • One-Hit Wonder
  • Never-Verified Reviewer
  • Critical Reviewer (avg. rating: 0.0)


Analysis Details

Fail Unverified Purchases

103 of the 563 total reviews for this product are unverified purchases. The unverified purchasers have rated this product an average of 3.0 while the verified purchasers have rated this product an average of 0.7. 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.

from unverified purchasers

from verified purchases


3.0
0.7


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 Suspicious Reviewers

One-Hit Wonders


Approximately 15% of reviewers have only reviewed this product. The One-Hit Wonders have rated this product an average of 2.5 while the reviewers who have posted more than one review have rated this product an average of 1.3. 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.

from one-hit wonders

from reviewers with more than one review


2.5
1.3


Never-Verified Reviewers


Approximately 20% of reviewers have never written a verified purchase review. The Never-Verified Reviewers have rated this product an average of 2.8 while the reviewers who have written at least one verified purchase review rated this product an average of 1.1. 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.

from never-verified reviewers

from reviewers with at least one verified purchase review


2.8
1.1


Read more about our Suspicious Reviewers test.

Fail Word Count Comparison

  • ~65%
  • 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 approximately 65% are within an overrepresented word count group. These reviews have rated this product an average of 0.0, while all other reviews have rated this product an average of 4.1. 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.

from reviews with an overrepresented word count

from reviews with a properly represented word count


N/A
4.1


Read more about our Word Count Comparison test.

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:
~6% of reviews
(3.8/5)
~3% of reviews
(4.5/5)
~4% of reviews
(4.7/5)
~3% of reviews
(5.0/5)
~6% of reviews
(4.3/5)
~3% of reviews
(3.0/5)
~3% of reviews
(3.0/5)
~3% of reviews
(4.5/5)
~3% of reviews
(5.0/5)
~3% of reviews
(5.0/5)
Show MoreShow Less


Approximately 15% of reviews use substantial repetitive phrases between them. These reviewers have rated this product an average of 4.4 while reviews without substantial repetitive phrases rated this product an average of 1.0. 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.

from reviews with substantial repetitive phrases

from reviews without substantial repetitive phrases


4.4
1.0


Read more about our Phrase Repetition test.

Fail Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:

<10% also reviewed:
The Grudge - Der Fluch by Unbekannt

Does not include products
from the same brand


Less than approximately 10% of reviewers have substantial overlapping product review history. These reviewers have rated this product an average of 4.8 while the reviewers who have a more unique product review history rated this product an average of 1.2. 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.

from reviewers with substantial overlapping history

from reviewers without a substantial overlapping history


4.8
1.2


Read more about our Overlapping Review History test.

Pass 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.

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 3, while the average ease score for reviewers in this category is 3.9.

3.0 Product's Average Ease Score

3.9 Category's Average Ease Score


3.0
3.9


Read more about our Reviewer Ease test.


Pass Brand Repeats

Brand Repeaters

We didn't detect a substantial amount of Brand Repeaters.

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.

  • <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.

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:
  1. 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.
  2. We have no information on reviews that were never published in the first place.
  3. 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.
Read more about our Deleted Reviews test.

N/A Reviewer Participation
We haven't collected sufficient data to run this test yet. more info