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That could just be misdirection...

Also known as kinesthetic anchoring, the bread and butter of basic NLP. It's pretty controversial like the rest of the material and is probably utterly ineffective.

There are a lot of subtle details required to make this effective, so it is indeed art.

The fact that _he_ believes it is important which shoulder he touches produces enough an effect that one can be fooled into thinking the touches have the power instead of the belief.