Yes, this is an ancient Indian ayurvedic technique whereby rubbing the palms together creates an electromagnetic energy which when given with positive suggestions such as "the child to become calm" on the temples of the face would create positive vibrations in the child. For it to be effective, it has to be done for a long time and preferable by rubbing ash of an incense stick in the palms before rubbing them hard as ash has the maximum conduction power of these positive vibrations. This is one of the reasons you may find a few indian sadhus with ash smeared on their body or on their forehead. This technique takes hardly a few seconds but when done with faith it can give tremendous results.