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Climate Changed: A Personal Journey through the Science
More product info
From Philippe Squarzoni
This report was last updated 6/3/2024.
Refresh the report to view the most up-to-date data available:
Refresh the report to view the most up-to-date data available:
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Report Info:
Note: We only analyze "reviews" and ignore one-tap "ratings".
*This is only a Preliminary Report
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Report Card
Warn Overall Grade
FAIL 
Unverified Purchases
Unverified PurchasesFAIL Suspicious Reviewers
Suspicious ReviewersWARN Phrase Repetition
Phrase RepetitionPASS Rating Trend
Rating TrendPASS Word Count Comparison
Word Count ComparisonPASS Overlapping Review History
Overlapping Review HistoryPASS Reviewer Ease
Reviewer EasePASS Brand Repeats
Brand RepeatsPASS Incentivized Reviews
Incentivized ReviewsPASS Deleted Reviews
Deleted ReviewsN/A Reviewer Participation
Reviewer Participation
Most Trusted Reviews
This graphic text book is chock full of details about ... [Go to full review]
Apr 19, 2015
100%
TRUST
TRUST
-
Verified Purchaser
-
Critical Reviewer (avg. rating: 3.6)
Overlapping Review History: reviewed 2 of 9 top products
Take-Back Reviewer (2 deleted Reviews; avg. rating: 3.0)
Easy Grader (avg. rating: 4.6)
Single-Day Reviewer (posted all reviews on Feb 12, 2017)
Least Trusted Reviews
This books is informative and wonderful, but unfortunately was not ... [Go to full review]
Feb 8, 2017
0%
TRUST
TRUST
-
Unverified Purchaser -
Contains repetitive phrases (show)
-
One-Hit Wonder -
Never-Verified Reviewer -
Critical Reviewer (avg. rating: 3.0)
Created on a high volume day
Analysis Details
Fail Unverified Purchases
Unverified Purchases
17 of the 85 total reviews for this product are unverified purchases. The unverified purchasers have rated this product an average of 3.8 while the verified purchasers have rated this product an average of 4.7. 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.
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
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.
Never-Verified Reviewers
Less than approximately 10% of reviewers have never written a verified purchase review. The Never-Verified Reviewers have rated this product an average of 3.0 while the reviewers who have written at least one verified purchase review 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.
Take-Back Reviewers
Approximately 30% of 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.
Warn Phrase Repetition
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
~6% of reviews
(4.5/5)
(4.5/5)
~16% of reviews
(3.8/5)
(3.8/5)
~13% of reviews
(4.0/5)
(4.0/5)
~10% of reviews
(4.0/5)
(4.0/5)
~10% of reviews
(4.0/5)
(4.0/5)
~6% of reviews
(4.0/5)
(4.0/5)
~6% of reviews
(4.5/5)
(4.5/5)
~6% of reviews
(3.5/5)
(3.5/5)
~6% of reviews
(4.0/5)
(4.0/5)
~10% of reviews
(4.3/5)
(4.3/5)
Approximately 85% of reviews use substantial repetitive phrases between them. This is an excessively large percentage which may indicate unnatural reviews.
Pass Rating Trend
Rating Trend
We didn't notice any signals that would indicate reviews were created unevenly over time.
Read more about our Rating Trend test.
Read more about our Rating Trend test.
Pass Word Count Comparison
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.
Read more about our Word Count Comparison test.
Pass Overlapping Review History
Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:
~15% also reviewed:
Forty Signs of Rain (Science in the Capital) by Kim Stanley Robinson
~15% also reviewed:
Fables, Vol. 18: Cubs in Toyland by Willingham, Bill
~15% also reviewed:
The Windup Girl by Brand: Night Shade Books
~15% also reviewed:
Foundation by Isaac Asimov
<10% also reviewed:
The Collapse of Western Civilization: A View from... by Naomi Oreskes
<10% also reviewed:
Earth Abides: A Novel by George R. Stewart
<10% also reviewed:
The Time Machine by H. G. Wells
<10% also reviewed:
Seagate Expansion 1.5TB 2.5" Portable USB... by Seagate
<10% also reviewed:
Fire and Fury: Inside the Trump White House by Michael Wolff
Approximately 35% 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.
Pass Reviewer Ease
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 4.1, while the average ease score for reviewers in this category is 4.3.
4.1 Product's Average Ease Score
4.3 Category's Average Ease Score
Read more about our Reviewer Ease test.
Pass Brand Repeats
Brand Repeats
Brand Repeaters
We didn't detect a substantial amount of Brand Repeaters.
Pass Incentivized Reviews
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.
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
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.