Thank you. That helps me to view the author's paraphrasing in a more charitable light. "Fraudulent" may have been too strong of a word. I still find it misleading to paraphrase a study in a way that is different from its main conclusion. We don't know what data concerns, etc. the study authors may have had such that they did not explicitly reach this conclusion. And the imprecision in Yamamoto's wording seems intended to mislead as well.

This is an interesting area of study and I'm sure a different author would make a more persuasive case for/against this effect being real.