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The Definitive Book of Body Language: The Hidden Meaning Behind People's Gestures and...
More product info From Barbara Pease

Review Hijacking Alert!
5 reviews are coming from a seemingly different product variation:

Body Language How to Read Others Thoughts by Their Gestures Overcoming common problems (Example Review )



Learn more about Review Hijacking.
Amazon Reviews for  The Definitive Book of Body Language: The Hidden Meaning Behind People's Gestures and Expressions
Rating:
2,414 Ratings
("Ratings" vs. "Reviews")
0% of potentially unnatural reviews removed (why?)
Adjusted:
2,414 Ratings*




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Report Card

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

Most Trusted Reviews

I cannot stress how good this book is, I've bought ... [Go to full review]
Apr 23, 2021      
100% TRUST
  • Verified Purchaser
  • Easy Grader (avg. rating: 4.8)


Least Trusted Reviews

This book covers the subject of body language in detail. ... [Go to full review]
Nov 30, 2015      
0% TRUST
  • Verified Purchaser
  • Contains repetitive phrases (show)
  • Overlapping Review History: reviewed 1 of 9 top products
  • Overrepresented Participation (posted 16 Reviews)
  • Easy Grader (avg. rating: 4.4)


Analysis Details

Fail Deleted Reviews

We discovered a total of 51 deleted Reviews for this product, with an average rating of 4.4. Even though deleted reviews don't affect the average rating, the fact that action was taken to delete reviews raises some red flags about the integrity of the reviews for the product as whole.

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.

4.4 average rating of deleted reviews

4.4


Show distribution of deleted 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:
~11% of reviews
(3.8/5)
~6% of reviews
(4.0/5)
~4% of reviews
(5.0/5)
~4% of reviews
(5.0/5)
~4% of reviews
(3.0/5)
Show MoreShow Less


Less than approximately 10% of reviews use substantial repetitive phrases between them. These reviewers have rated this product an average of 5.0 while reviews without substantial repetitive phrases 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 substantial repetitive phrases

from reviews without substantial repetitive phrases


5.0
4.1


Read more about our Phrase Repetition test.

Warn Suspicious Reviewers

One-Hit Wonders


Approximately 15% of reviewers have only reviewed this product. While this is more One-Hit Wonders than we'd expect to see, it does not appear to have a significant impact on the overall rating.

from one-hit wonders

from reviewers with more than one review


4.2
4.2


Never-Verified Reviewers


Approximately 25% of reviewers have never written a verified purchase review. While this is more Never-Verified Reviewers than we'd expect to see, the discrepancy in ratings between the Never-Verified Reviewers and reviewers who have written at least one verified purchase review isn't significant enough to rule out the possibility of it being due to random chance.

from never-verified reviewers

from reviewers with at least one verified purchase review


4.4
4.1


Read more about our Suspicious Reviewers 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 Unverified Purchases

136 of the 2,414 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.

from unverified purchasers

from verified purchases


3.8
4.4


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 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.

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

Does not include products
from the same brand


Less than approximately 10% of reviewers have substantial overlapping product review history. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.

from reviewers with substantial overlapping history

from reviewers without a substantial overlapping history


3.8
4.2


Read more about our Overlapping Review History 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 4.3.

4.2 Product's Average Ease Score

4.3 Category's Average Ease Score


4.2
4.3


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.

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