They didn't get the monkeys sit and do those for hours, just a short while per day. > Each session consisted of 30 trials. > The experiments took place over e

They didn't get the monkeys sit and do those for hours, just a short while per day. > Each session consisted of 30 trials. > The experiments took place over eight days, with the chimpanzees participating in five test sessions per day in order to cover all of the novel combinations within a day. The study just affirms my point that it is hard to make monkeys do stuff for extended amounts of time or the experiment would have progressed much faster. The only way we have to motivate them is to give them food directly after completing a small task, and that motivation doesn't really work in the long run. You can't make them do an hour long task and then give them something. Edit: Humans however have been shown capable to toil away with no reward whatsoever for years just to achieve some arbitrary goal or reward they believe exists. If this was just a question of degree then it shouldn't have been hard to get monkeys to do a days work with no rewards. Humans aren't a thousand times smarter than monkeys.