How would aliens test humans for empathy?

500,000 people have been kidnapped from all over the world by aliens.

The aliens want to see if humans have empathy, and they can't understand our languages, as we speak they hear just random noises coming out of our mouths.

Scientifically speaking what is the most effective way for aliens to measure in a laboratory if humans have or lack empathy?

For the sake of the question let's say they won't use hyper technology to get inside our heads, instead they will use some quite primitive technology similar to ours, so nothing that resembles magic or things which are way to futuristic.

Empathy: the ability to understand and share the feelings of another.

posted about 6 years ago

System‭

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