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Advanced Aromatherapy: The Science of Essential Oil Therapy
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From Kurt Schnaubelt Ph.D.
This report was last updated 7/18/2019.
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Report Info:
Note: We only analyze "reviews" and ignore one-tap "ratings".
Top products in Aromatherapy with authentic reviews:
Report Card
Pass Overall Grade
FAIL Suspicious Reviewers
WARN Deleted Reviews
WARN Phrase Repetition
WARN Reviewer Participation
PASS Rating Trend
PASS Unverified Purchases
PASS Word Count Comparison
PASS Overlapping Review History
PASS Reviewer Ease
PASS Brand Repeats
PASS Incentivized Reviews
Most Trusted Reviews
complicated read [Go to full review]
Nov 11, 2014 3 of 6 found this helpful.
100%
TRUST
TRUST
- Verified Purchaser
- Take-Back Reviewer (9 deleted Reviews; avg. rating: 3.6)
- Critical Reviewer (avg. rating: 4.1)
Least Trusted Reviews
We couldn't find any low-quality reviewsAnalysis Details
Fail Suspicious Reviewers
Take-Back Reviewers
48 of the 123 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.
Warn Deleted Reviews
We discovered a total of 5 deleted Reviews for this product, with an average rating of 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.
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:
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2 reviews
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3 reviews
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16 reviews
(4.5/5)
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4 reviews
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10 reviews
(4.8/5)
(4.8/5)
2 reviews
(4.5/5)
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2 reviews
(5.0/5)
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4 reviews
(4.8/5)
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4 reviews
(4.0/5)
(4.0/5)
2 reviews
(4.5/5)
(4.5/5)
34 of the 123 total reviews for this product use substantial repetitive phrases between them. This is an excessively large percentage which may indicate unnatural reviews.
Warn Reviewer Participation
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- 59%
- From reviewers with an overrepresented participation
We see the following 3 participation groups with a statistically significant greater concentration than what we'd expect to see:In total, we found that 73 reviewers (or 59%) are within an overrepresented participation group. This is an excessively high number of reviewers in overrepresented participation groups.
Pass Rating Trend
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- 5%
- Created over 3 days
We counted 123 reviews for this product over the span of 7,087 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 3 days exceeding this threshold:In total, we found that 6 reviews were created on just 3 days. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Pass Unverified Purchases
21 of the 123 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 Word Count Comparison
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- 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.
Read more about our Word Count Comparison test.
Pass Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:
12% also reviewed:
The Healing Intelligence of Essential Oils: The... by Kurt Schnaubelt Ph.D.
12% also reviewed:
The Complete Book of Essential Oils and... by Valerie Ann Worwood
5% also reviewed:
Amazon Basics USB Type-C to USB Type-C 2.0... by Amazon Basics
4% also reviewed:
500 Formulas For Aromatherapy: Mixing Essential... by Schiller, Carol/ Schiller, David
4% also reviewed:
The Complete Guide To Clinical Aromatherapy and... by Elizabeth Ashley
4% also reviewed:
Euri Lighting DLC4-1040e LED 4"... by Euri Lighting
38 of the 123 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 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 4.4, while the average ease score for reviewers in this category is 4.5.
4.4 Product's Average Ease Score
4.5 Category's Average Ease Score
Read more about our Reviewer Ease 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.
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- 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.
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.