"Function (Baltimore: Williams & Wilkins, 2nd ed., 1971). It takes two people to perform a kinesiological test. Choose a friend or a family member for testing. We'll call him or her your subject. Have the subject stand erect, right arm relaxed at his side, left arm held out parallel to the floor, elbow straight. (You may use the other arm if you wish.) Face your subject and place your left hand on his right shoulder to steady him. Then place your right hand on the subject's extended left arm just above the wrist. Tell the subject you are going to try to push his arm down as he resists with all his strength. Now push down on his arm fairly quickly, firmly, and evenly. The idea is to push just hard enough to test the spring and bounce in the arm, but not so hard that the muscle becomes fatigued. It is not a question of who is stronger, but of whether the muscle can "lock" the shoulder joint against the push. Assuming there is no physical problem with the muscle and the subject is in a normal, relaxed state of mind, receiving no extraneous stimuli (for this reason it is important that the tester not smile or otherwise interact with the subject), the muscle will "test strong"--the arm will remain locked. If the test is repeated in the presence of a negative stimulus (for instance, artificial sweetener), "although you are pushing down no harder than before, the muscle will not be able to resist the pressure and the subject's arm will fall to his side."4"