Here is a video presenting Emoto's version.

I was skeptical at first, and tried to make the test with as little room as possible for random bias.
On March 14th 2015, I've cooked ordinary Vietnamese rice, and sterilized 3 identical air tight pots. After homogenizing the rice, i've placed equal amounts in each pot and closed them firmly.

The 3 pots have been stored side by side, in a bright area away from direct sunshine, thus sharing the same environment, especially temperature and lighting. Labels with French words were put on the "cursed" pot (crève, inutile, haine, pourri) and "blessed" pot (courage, amour, merci, joie). Nearly everyday I've been "focusing emotions" on them for few seconds. That simply consisted in holding the pot in front of my face, focus my attention on it, and then sincerely feeling emotions without talking.

After a month, April 17th 2015, the evolution is already visible for the cursed rice:

After 112 days, July 5th 2015, the contrast is clear for all 3: brown liquid for the "cursed", semi-liquid for the neutral reference, dry for the "blessed":

I note however that the neutral rice is whiter than the blessed one, although much wetter.

Without talking about good or bad state of rice, I can conclude an interesting correlation between hateful feelings and accelerated decay. Considering that visual observation can compare the cursed and blessed rice to the reference rice as "more/as/less" decayed, that gives 3x3 possible results. Hence the odds of happening for the current result are 1/9 = 11%.

The next step is to repeat this experiment with more samples (e.g. 3 of each) to check if the correlation is still visible.