The Wind-Up Bird Chronicle: A Novel
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From Vintage
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Note: We only analyze "reviews" and ignore one-tap "ratings".
Top products in Literary with authentic reviews:
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Most Trusted Reviews
TRUST
- Verified Purchaser
- Take-Back Reviewer (2 deleted Reviews; avg. rating: 4.5)
- Brand Repeater (2 of 99 reviews for this brand; avg rating: 5.0)
- Overlapping Review History: reviewed 2 of 9 top products
- Critical Reviewer (avg. rating: 4.1)
Least Trusted Reviews
TRUST
- Unverified Purchaser
- Never-Verified Reviewer
- Brand Repeater (2 of 14 reviews for this brand; avg rating: 5.0)
- Overlapping Review History: reviewed 1 of 9 top products
- Overrepresented Participation (posted 14 Reviews)
- Easy Grader (avg. rating: 4.8)
Analysis Details
We discovered a total of 91 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:
- 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.
One-Hit Wonders
173 of the 888 reviewers have only reviewed this product. While this is more One-Hit Wonders than we'd expect to see, the discrepancy in ratings between the One-Hit Wonders and reviewers who have posted more than one review isn't significant enough to rule out the possibility of it being due to random chance.
Never-Verified Reviewers
160 of the 888 reviewers have never written a verified purchase review. The Never-Verified Reviewers have rated this product an average of 4.3 while the reviewers who have written at least one verified purchase review 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.
Take-Back Reviewers
287 of the 888 reviewers have had at least one of their past reviews for another product deleted. This is an excessively large percentage of Take-Back Reviewers which may indicate unnatural reviews.
Single-Day Reviewers
19 of the 888 reviewers have written multiple reviews but posted all of them on a single day. The Single-Day reviewers have rated this product an average of 4.7 while all other reviewers 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.
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- 62%
- 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 553 reviewers (or 62%) are within an overrepresented participation group. These reviews have rated this product an average of 4.2, while all other reviews have rated this product an average of 4.0. 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.
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- 4%
- Created over 11 days
We counted 888 reviews for this product over the span of 7,757 days, an average of 0.1 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 2 or fewer reviews on any given day.
However, we see the following 11 days exceeding this threshold:In total, we found that 35 reviews were created on just 11 days. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
385 of the 888 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.
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- 0%
- Have an overrepresented word count
Read more about our Word Count Comparison test.
51 of the 888 total reviews for this product use substantial repetitive phrases between them. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
7% also reviewed:
Norwegian Wood by Haruki Murakami
7% also reviewed:
Kafka on the Shore (Vintage International) by Haruki Murakami
6% also reviewed:
Hard-Boiled Wonderland and the End of the World:... by Haruki Murakami
6% also reviewed:
1Q84 (Vintage International) by Haruki Murakami
5% also reviewed:
The Hunger Games (Hunger Games Trilogy, Book 1) by Suzanne Collins
5% also reviewed:
Gone Girl: A Novel by Julia Whelan
4% also reviewed:
The Goldfinch by Donna Tartt
4% also reviewed:
A Wild Sheep Chase: A Novel by Murakami, Haruki/ Birnbaum, Alfred
4% also reviewed:
All the Light We Cannot See: A Novel by Anthony Doerr
236 of the 888 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.
4.1 Product's Average Ease Score
4.2 Category's Average Ease Score
Read more about our Reviewer Ease test.
Brand Repeaters
161 of the 888 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.
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- 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.