The Thomas Sowell Reader
More product info
From Thomas Sowell
Refresh the report to view the most up-to-date data available:
Note: We only analyze "reviews" and ignore one-tap "ratings".
Report Card
Most Trusted Reviews
TRUST
- Verified Purchaser
- Take-Back Reviewer (7 deleted Reviews; avg. rating: 4.7)
- Easy Grader (avg. rating: 4.9)
Least Trusted Reviews
TRUST
- Unverified Purchaser
- Contains repetitive phrases (show)
- Take-Back Reviewer (1 deleted Review; avg. rating: 1.0)
- Brand Repeater (2 of 54 reviews for this brand; avg rating: 5.0)
- Overlapping Review History: reviewed 3 of 9 top products
- Easy Grader (avg. rating: 4.6)
Analysis Details
20 of the 153 total reviews for this product are unverified purchases. The unverified purchasers have rated this product an average of 4.3 while the verified purchasers have rated this product an average of 5.0. 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.
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.
We discovered a total of 2 deleted Reviews for this product, with an average rating of 5. 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:
- 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.
Take-Back Reviewers
58 of the 153 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.
(5.0/5)
(5.0/5)
(5.0/5)
(5.0/5)
(4.8/5)
(5.0/5)
(5.0/5)
(5.0/5)
(5.0/5)
(5.0/5)
31 of the 153 total reviews for this product use substantial repetitive phrases between them. This is an excessively large percentage which may indicate unnatural reviews.
-
- 37%
- 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 56 reviewers (or 37%) are within an overrepresented participation group. While this is more reviews from overrepresented participation groups than we'd expect to see, the discrepancy in ratings between reviewers in an overrepresented participation groups and all other reviewers isn’t significant enough to rule out the possibility of it being due to random chance.
-
- 0%
- Created on high-volume days
Read more about our Rating Trend test.
-
- 0%
- Have an overrepresented word count
Read more about our Word Count Comparison test.
8% also reviewed:
The Road to Serfdom, the Definitive Edition: Text... by F. A. Hayek
5% also reviewed:
Things That Matter: Three Decades of Passions,... by Charles Krauthammer
5% also reviewed:
The Orphan Master's Son: A Novel (Pulitzer... by Adam Johnson
5% also reviewed:
Foot Back Mässağër G Spöť Ðịldǒ... by Mark R. Levin Hauidne
4% also reviewed:
Human Action: The Scholar's Edition by Ludwig von Mises
4% also reviewed:
The Amateur by Brand: Regnery Publishing
3% also reviewed:
The Forgotten Man: A New History of the Great... by Amity Shlaes
3% also reviewed:
Something Other Than God: How I Passionately... by Fulwiler, Jennifer
3% also reviewed:
Guns, Germs and Steel: The Fate of Human Societies by Jared Diamond
25 of the 153 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.
4.4 Product's Average Ease Score
4.3 Category's Average Ease Score
Read more about our Reviewer Ease test.
Brand Repeaters
36 of the 153 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.
-
- 0%
- Admitted to receiving an incentive
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.