Why scientists are experimenting on monkeys

[Still Waters]

The macaque in front of me has a choice. Two differently coloured images have been slid in front of her cage.

She taps the purple picture and gets a treat. The next time she taps the black image. On this occasion not only does she get a reward, but a second monkey facing her does too.

http://www.bbc.co.uk...health-25888372

[Xynoplas]

"What this means is that some of the monkeys have had small lesions - areas of damage - made in part of their frontal lobe. This is something that couldn't be done with human volunteers. It allows the scientists to examine what happens when specific areas of neural network - the wiring in the brain - malfunction."

Translation: We can chop them up anyway we wish.