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Bottlenecks: Aligning UX Design with User Psychology
More product info From David C. Evans

Amazon Reviews for  Bottlenecks: Aligning UX Design with User Psychology
Rating:
32 Ratings
32 Reviews
("Ratings" vs. "Reviews")
44% of potentially unnatural reviews removed (why?)
Adjusted:
View/Edit Adjustment
Jump to Report Card

Report Card

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

Most Trusted Reviews

Fascinating! This book unlocks the psychological process users go through ... [Go to full review]
Mar 15, 2019      
100% TRUST
  • Verified Purchaser
  • Critical Reviewer (avg. rating: 3.8)


Least Trusted Reviews

We couldn't find any low-quality reviews

Analysis Details

Fail Suspicious Reviewers

One-Hit Wonders


14 of the 32 reviewers have only reviewed this product. This is an excessively large percentage of One-Hit Wonders which may indicate unnatural reviews.

from one-hit wonders

from reviewers with more than one review


5.0
4.9


Read more about our Suspicious Reviewers test.

Warn Deleted Reviews

We discovered a total of 1 deleted Review 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:
  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.

5.0 average rating of deleted reviews

5.0


Show distribution of deleted reviews

Warn Rating Trend

  • 13%
  • Created over 2 days

We counted 32 reviews for this product over the span of 1,131 days, an average of 0.0 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 1 or fewer reviews on any given day.

However, we see the following 2 days exceeding this threshold:In total, we found that 4 reviews were created on just 2 days. Although any days with a larger number of reviews than expected is suspicious, these reviews do not appear to have a significant impact on the overall rating.

from reviews created on high volume days

from reviews created on normal volume days


5.0
5.0


Read more about our Rating Trend test.

Warn 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 4.5, while the average ease score for reviewers in this category is 4.2. While this discrepancy is rather large, it is not quite large enough to rule out the possibility of it being due random chance.

4.5 Product's Average Ease Score

4.2 Category's Average Ease Score


4.5
4.2


Read more about our Reviewer Ease test.


Warn 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:
4 reviews
(5.0/5)
2 reviews
(5.0/5)
5 reviews
(5.0/5)
3 reviews
(5.0/5)
2 reviews
(5.0/5)
2 reviews
(5.0/5)
2 reviews
(5.0/5)
2 reviews
(5.0/5)
2 reviews
(5.0/5)
Show MoreShow Less
Common Phrases in Titles:
2 reviews
(5.0/5)


7 of the 32 total reviews for this product use substantial repetitive phrases between them. While this is more than we'd expect to see, it does not appear to have a significant impact on the overall rating.

from reviews with substantial repetitive phrases

from reviews without substantial repetitive phrases


5.0
5.0


Read more about our Phrase Repetition test.

Warn Reviewer Participation

  • 72%
  • 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 23 reviewers (or 72%) are within an overrepresented participation group. This is an excessively high number of reviewers in overrepresented participation groups.

From reviewers with an overrepresented participation

From reviewers with a properly represented participation


5.0
4.9


Read more about our Reviewer Participation test.

Pass Unverified Purchases

14 of the 32 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


5.0
4.9


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

  • 0%
  • 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
  • 0%
  • Substantial overlapping review history
0 of the 32 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.
Read more about our Overlapping Review History 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.

  • 0%
  • 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.