Test his hypothesis how, exactly? By putting a child and a dog into a disaster situation?

Examples available in the link in the comment you responded to.

In order to attempt to falsify a hypothesis you don't need to necessarily run a direct experiment on it. In fact, few things are testable like that.

Anyway, I think I have what I need to know as to how he tests his ideas.

So 40% admit that they would save their own dog over a foreign tourist, when asked.

Now, ask yourself how many would save their own dog if they weren't being asked or observed (and implicitly judged)?

I consider the link fairly strong evidence for my claim.

It's far from knowledge acquisition; I'll have forgotten this by next week. But your evidence didn't support your position. I told you why I think it supported mine.

I don’t have a position. I was wondering how to weigh your statement.