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Smarter L-Theanine 250mg Supplement for Stress, Relaxation, Mood & Alertness Support, in...
More product info
From SmarterVitamins
This report was last updated 2/10/2023.
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".
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Report Card
Pass Overall Grade
FAIL 
Deleted Reviews
Deleted ReviewsFAIL Brand Repeats
Brand RepeatsWARN Suspicious Reviewers
Suspicious ReviewersWARN Reviewer Ease
Reviewer EaseWARN Word Count Comparison
Word Count ComparisonPASS Rating Trend
Rating TrendPASS Unverified Purchases
Unverified PurchasesPASS Phrase Repetition
Phrase RepetitionPASS Overlapping Review History
Overlapping Review HistoryPASS Incentivized Reviews
Incentivized ReviewsN/A Reviewer Participation
Reviewer Participation
Most Trusted Reviews
Great product and provides sense of relaxation. [Go to full review]
Mar 16, 2021
100%
TRUST
TRUST
-
Verified Purchaser
-
Take-Back Reviewer (4 deleted Reviews; avg. rating: 5.0) -
Overlapping Review History: reviewed 3 of 9 top products -
Easy Grader (avg. rating: 4.3)
Critical Reviewer (avg. rating: 4.2)
Brand Repeater (3 of 9 reviews for this brand; avg rating: 5.0)
Least Trusted Reviews
High quality [Go to full review]
Apr 4, 2019
0%
TRUST
TRUST
-
Unverified Purchaser -
Overrepresented word count (2 words)
-
Take-Back Reviewer (1 deleted Review; avg. rating: 5.0)
-
Brand Loyalist (4 of 8 reviews for this brand; avg rating: 5.0) -
Overrepresented Participation (posted 8 Reviews) -
Easy Grader (avg. rating: 5.0)
Analysis Details
Fail Deleted Reviews
Deleted Reviews
We discovered a total of 11 deleted Reviews for this product, with an average rating of 4.8. 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.
4.8 average rating of deleted reviews
Fail Brand Repeats
Brand Repeats
Brand Loyalists
Less than approximately 10% of reviewers have reviewed multiple products but half or more of their reviews are for this brand. This is an excessively large percentage of Brand Loyalists which may indicate unnatural reviews.
Warn Suspicious Reviewers
Suspicious Reviewers
Take-Back Reviewers
Approximately 35% 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 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 4.5, while the average ease score for reviewers in this category is 4.3. 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
4.3 Category's Average Ease Score
Read more about our Reviewer Ease test.
Warn Word Count Comparison
Word Count Comparison
-
- ~30%
- Have an overrepresented word count
In the graph above, we can see the distribution of review word counts for this product and the expected distribution for this category. We see the following 1 group with a statistically significant greater concentration than what we'd expect to see:In total, we found that approximately 30% are within an overrepresented word count group. While this is more reviews from overrepresented word count groups than we'd expect to see, these reviews do not appear to have a significant impact on the overall rating.
Pass Rating Trend
Rating Trend
-
- <10%
- Created on high-volume days
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 Unverified Purchases
Unverified Purchases
66 of the 830 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.
Pass 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:
~3% of reviews
(5.0/5)
(5.0/5)
~3% of reviews
(4.5/5)
(4.5/5)
~3% of reviews
(5.0/5)
(5.0/5)
Less than approximately 10% of reviews 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.
Pass Overlapping Review History
Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:
<10% also reviewed:
Sports Research Astaxanthin Supplement from Algae... by Sports Research
<10% also reviewed:
John Frieda Midnight Brunette Color Deepening... by John Frieda
<10% also reviewed:
Copco Non-Skid Pantry Cabinet Lazy Susan... by Copco
<10% also reviewed:
De La Cruz Sulfur Acne Treatment, Maximum... by De La Cruz
<10% also reviewed:
Genius Caffeine Pills 100mg, Extended-Release... by The Genius Brand
<10% also reviewed:
Ancestral Supplements Grass Fed Beef Liver... by Ancestral Supplements
<10% also reviewed:
Amazon Brand – Pinzon 300 Thread Count Organic... by Pinzon
<10% also reviewed:
NooMost Organic Lions Mane Supplement Capsules... by NooMost
Does not include products
from the same brand
from the same brand
Less than approximately 10% 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 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.