
Two weeks ago, I gave a blood-pressure gauge to my parents and a couple of days ago, my mother came to my place to express her thanks. She said to me, “Thanks to the device, my blood pressure has surely been decreasing. I’ve been using it more than three times a day.” I immediately replied, ”Oh no! That isn’t a machine for reducing your blood pressure.” She frowned and said, “I wasn’t born yesterday. I know what you are saying…
but that's true…
The next day, I told this episode to the drugstore owner who sold the blood-pressure gauge to me. He said, “Hmmm, that’s interesting. It reminds me of the so-called bathroom scale effect. Well, just stepping on a bathroom scale everyday can have a positive effect on the weight loss of someone. This is called the placebo effect.”
Many medical products and supplements seem to rely heavily on the placebo effect. Consumers consider the quality, reputation, and advertising of these products as important factors in their purchasing decisions. In general, it can be said that our mind-sets and personal situations have a strong influence on our health.
Things are not so simple, however. In fact we can’t expect too much from the placebo effect. For instance, in the past, Chinese soaps and substances derived from special seaweeds sold like hotcakes in Japan because many people believed that these things made them slender. Actually, people began to feel fed up and frustrated with these products. As a result, the Chinese soap boom faded away before long; apparently the soap in itself had no effect on a person’s ability to slim down.
Our perceptions and senses can be swayed by our own psychological conditions. An experiment demonstrated the fact that two samples of the same water can be perceived differently by a person under certain circumstances. Water in a bottle with “bless you” written on it was perceived to be sweeter than the same water in a bottle with nothing written on it.

It seems to me that we don’t always need scientific truths. In other words, truths can deceive us in various ways. There is a Japanese saying which goes, “believers will be saved.”
Here is the Amadeus effect: Mozart’s compositions make you smarter. It is often said that examinees must listen to Mozart before taking tests. The frequency of his musical works is believed to stimulate our brains to operate at optimum efficiency. Do you believe this? Surely your answer must be YES!