create a red pill and a blue pill....
feed em to kids
say 'I beleive the people who ate the red pill will be ill'
the people who ate the blue pill - nothing will happen ^^
oh come on - theres loads with a hypothesis control group -
people holding something (time them ages/heights etc)
show a group of people some objects, cover it up and in like 30secs - get them to rememeber as many as possible. Have grade 5,6,7,8, etc?
IDK you americans are weird - in the uk we dont have anything like that =P