While I agree that on the surface this appears funny, I have a problem with what I perceive is silly research with 'caged' monkeys. I believe we can learn an enormous amount from all animals, but not like this, and at least to me, not a surprise - deliberating aggravating a monkey and believing this is great scientific research to show that monkeys know when they are getting jerked around - like humans do. Oh good, we've learned that we can piss a monkey off. It's the parts that aren't like us that we have the most to learn from, and not from cages. Humans are doing a pathetic job of being the so called 'superior' species - factory and dairy farming, zoos, keeping wild life in captivity and taking them from their natural habitat, research, entertainment and way too many more.
I came across this quote, which to me says it all.
Choosing to denounce "ownership" of our fellow beings,
and embrace "guardianship" instead, nurtures a mindset
for protecting human and other animals from harm. As I
see it "ownership" is simply the license to do what one will
to one who is "owned" either with marginalized consequence
or none." - Doll Stanley, Director, IDA's Hope Animal Sanctuary.