explain the technique of scientific management which is the strongest motivator for work to reach standard performance?

Differential wage system is the technique of scientific management which is the strongest motivator for work to reach standard performance. In this system the workers can be classified as efficient or inefficient on the basis of cretain specific standards (related to quality, quantity, etc). For example, suppose it is determined that standard output of per labour per day is 10 units. it was decided that those workers who made more than or equal to the standard units will get Rs. 20 per unit and those who made less than the standard units will get Rs.10 per unit. In this way a difference is made between efficient labour and inefficient workers.