Applause test

How to distinguish a right-handed or left-handed
There are no people ambidextrous, you can be a right-handed or left-handed, there is a dominant part. The writing with the right hand or the left is not the right criterion to know the dominant part of a person. The test of the applause is a test to certify whether a person is really left-hander. Who beat right on the left is right-handed, who beat left on the right is left-handed. If a person beats hands symmetrically and vertically, then you can try to repeat the test him supporting hands on the two legs or on a plane, saying to keep a steady hand and moving the other. I write with one of two hands does not indicate anything, the first left-handers because they can motor to learn to write with the right, the second because left-handers until recently were forced to write with the right. On the contrary may be true the other way: there are people who write with the left, but they are the right-handed. Applauding, like in theater, the hand beat above is dominant: if the right hand is upon you are right-handed, otherwise if it is above you are left-handers. This test is very important to find out what the cerebral hemisphere for the first person active, there are many who consider themself right-handed only because they were forced duting the childood. The preferential use of the hand begins in the brain. That happens when, the first cell division starts to develop the portion of the cerebellum and so the capacity to use of a distint hand.