Loving Someone with Bipolar Disorder: Understanding and Helping Your Partner (The New Harbinger...
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From Julie A. Fast
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Top products in Self-Help with authentic reviews:
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Most Trusted Reviews
TRUST
- Verified Purchaser
- Take-Back Reviewer (2 deleted Reviews; avg. rating: 5.0)
- Easy Grader (avg. rating: 4.7)
Least Trusted Reviews
TRUST
- Verified Purchaser
- Contains repetitive phrases (show)
- Take-Back Reviewer (1 deleted Review; avg. rating: 5.0)
- Overlapping Review History: reviewed 1 of 9 top products
- Overrepresented Participation (posted 8 Reviews)
- Critical Reviewer (avg. rating: 4.4)
Analysis Details
One-Hit Wonders
14 of the 166 reviewers have only reviewed this product. The One-Hit Wonders have rated this product an average of 4.9 while the reviewers who have posted more than one review have 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
47 of the 166 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.
(5.0/5)
(5.0/5)
(4.4/5)
(5.0/5)
(5.0/5)
(5.0/5)
(5.0/5)
(4.7/5)
(4.5/5)
(4.5/5)
24 of the 166 total reviews for this product use substantial repetitive phrases between them. These reviewers have rated this product an average of 4.8 while reviews without substantial repetitive phrases rated this product an average of 4.4. 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.
We discovered a total of 4 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.
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- 34%
- 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 34%) are within an overrepresented participation group. While this is more reviews from overrepresented participation groups than we'd expect to see, these reviews do not appear to have a significant impact on the overall rating.
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- 4%
- Created over 1 day
We counted 166 reviews for this product over the span of 2,629 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 1 day exceeding this threshold:In total, we found that 6 reviews were created on just 1 day. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
18 of the 166 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.
5% also reviewed:
The Bipolar Disorder Survival Guide, Second... by David J. Miklowitz
3% also reviewed:
An Unquiet Mind: A Memoir of Moods and Madness by Kay Redfield Jamison
2% also reviewed:
The Bipolar II Disorder Workbook: Managing... by Stephanie McMurrich Roberts
2% also reviewed:
A People's History of the United States by Howard Zinn
2% also reviewed:
Take Charge of Bipolar Disorder: A 4-Step Plan... by Julie A Fast
2% also reviewed:
Bipolar Disorder: A Guide for Patients and... by Francis Mark Mondimore MD
2% also reviewed:
Welcome to the Jungle: Everything You Ever Wanted... by Conari Press
2% also reviewed:
The Bipolar Workbook, First Edition: Tools for... by Brand: The Guilford Press
from the same brand
24 of the 166 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
4.4 Category's Average Ease Score
Read more about our Reviewer Ease test.
Brand Repeaters
5 of the 166 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.