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Over the past few months a number of people (who don't know each other) have been telling me that I should try a power of thought experiment that's also known as "the rice experiment." They're confident, that through this experiment, I'll "see the light" of how thought can effect our physical world despite my skepticism.

In searching YouTube, I found a number of videos about this by searching for "rice experiment," such as this one:

  Rice Hado Experiment Masaru Emoto
  http://www.youtube.com/watch?v=PgWrNKKX0Pc

The experiment

The idea is to set up two jars containing some cooked rice, and then, every day, say only nice and encouraging things to one jar of rice, and insulting and hateful things to the other jar of rice.

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After a certain period of time (which seems to vary from months to years), the jar with the "hated" rice should be the only one that goes bad and rots.

  Positive Thinking Power - The Rice Experiment
  More Evidence From Dr Masaru Emoto On The Power Of Thoughts
  http://www.positive-thinking-principles.com/positive-thinking-power.html

My question

Are there credible studies that prove or disprove this? Any explanation of what might actually be going on here (e.g., why the "hated" jar of rice goes bad earlier) would also be interesting.

Thanks in advance.

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My initial inclination would be to say that ONLY the people who have the "hated" rice go bad first report it, and all the "loved" rice that goes bad isn't mentioned. But that's just my cynicism. – Larian LeQuella Nov 13 '11 at 4:18
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I just stumbled across this as the first result after searching and the person who posted it is clearly in denial: youtube.com/watch?v=QJkxd5sK67o The person who posted the video is claiming that the Positive rice had barely changed, which is obviously BS because the Positive rice is also filled with black spots, just not as centralized as the Negative rice. People believe what they want to believe. – xiaohouzi79 Nov 14 '11 at 0:52
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Do you have to open the jar while speaking to the rice? In which language does the rice listen to you? Is this already used by the military? – user unknown Nov 14 '11 at 8:38
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How is this a thought experiment? It sounds like a speech experiment. – Flimzy Nov 14 '11 at 15:17
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Do you spit at the hated rice before you seal the jar? – Jonas Nov 14 '11 at 16:19
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1 Answer

up vote 9 down vote accepted

No, there are no credible studies that prove this, and there doesn't have to be studies to disprove this (nor are there likely to be).

In brief, there has been no attempt to offer any sort of mechanism (within the scientific realm) by which a persons thoughts or intentions could modify water, or rot rice, or have any other kind of effect. On the other hand, there are a great many ways to explain why so many anecdotes appear all over the internet that support the theory. Confirmation bias and general disregard for the scientific method are probably the biggest contributors.

The lack of counterclaims is understandable. The claim is so absurd that only non-scientific minds would waste their time attempting to reproduce the result. Few respectable scientists would waste their time or money arranging:

  • A few hundred jars of rice (for statistical significance),
  • A blind party to divide jars into three groups: positive and negative intentions, as well as a group which will not be interacted with (a control group),
  • Controls for extremely influential variables such as temperature and humidity (controlled variables),
  • Another blind party of "believers" interacting with the jars each day with their genuine intentions of affecting the rice with their thoughts (double blind),
  • Yet another blind party evaluate the amount of rot on each jar with no knowledge of how jars were treated or what group they were part of (triple blind study).

As you can see, there's little more than common sense required to come up with even a mildly scientific method - but lots of effort in performing a rigorous experiment. (Arguably the most taxing requirement being the gathering of "believers".)

Because all anecdotal experiments such as youtube videos and blogs, as well as Masaru Emoto and his followers' own experiments do not address all of the above considerations (most address none of them), they cannot be considered credible.

 

Jokes aside, it's generally not considered the responsibility of the scientific community to disprove every stray bit of pseudoscience that attains a certain amount of popularity. For that reason, there will most likely never be studies with the goal of disproving them. It would be a different case if Masaru Emoto had ever submitted a publication for peer review to the scientific community, but his only uncoverable peer reviewed publication (on intentions affecting the formation of water crystals) was to the Journal of Alternative and Complementary Medicine.[1] That alone should tell you how much weight is placed in his theories. Furthermore, a one million dollar prize was offered to anyone who could reproduce his results in a double blind study, which has never been claimed. [2]

So in conclusion, there's likely no credible studies that prove this theory, because none of the experiments claiming to provide supporting evidence for theory are scientifically rigorous (including the experiment described in the question). There's no credible studies disproving this theory because there is no incentive or requirement in the scientific community to address this pseudoscience. There's also no reason for anyone to believe that such a phenomenon is possible if they take the time to research the proposed mechanism for the power of thought and how it fails to measure up to common scientific knowledge.

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3  
I would argue against your comment for 2 reasons. First, the primary point of my answer was to explain why there are no scientific articles on this experiment that can be referenced. Second, I cannot reference the tangential studies on prayer because the pseudo-scientific claim that thoughts and intentions influence water are completely different from the religious belief that prayers influence health. While it's tempting to group all pseudoscience together, you are mistakenly associating two completely different beliefs and theories. – Alain Nov 16 '11 at 14:49
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Are you saying that absence of evidence is not evidence of absence? – Alain Nov 16 '11 at 15:07
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Sklivvz: How would you suggest going about proving the absence of something? Ought he to submit screenshots of his database searches? His descriptions of scientific inquiry were there to explain why no credible results exist to support the original conjecture. – ozmo Nov 16 '11 at 15:11
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I've changed all instances of "there's no studies that disprove this theory" to "there's likely no studies that disprove this theory", but I stand by my statement that there are definitely no credible studies that prove this study. – Alain Nov 16 '11 at 15:11
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For example: M. Emoto (the proponent of this idea) is also known to be a proponent of the healing powers of water (no really!). Does this prove his rice experiment is fake? No. However it gives us more elements to put on the scale. Simply saying "it's crap and nobody can be bothered" is hardly convincing... – Sklivvz Nov 16 '11 at 16:04
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