To do tests on your friends get a deck of cards and make them try to guess the suit on each card they pick up. A test a scientist would do on a person is put the person in a sound-proof room. Then, they put a halved ping-pong over the persons eyes and shine a red light. Next, they put headphones on you and play a blank noise. A person in another room watches a video clip and tries to send the images mentally to the person in the sound-proof room. Finally, the person in the sound proof room says anything that comes to his or her mind.