Preliminary Control
Preliminary control, also known as steering control or feedforward control, focuses on the resources that the organization brings in from the environment. It attempts to monitor the quality or quantity of these resources before they enter the organization.
Screening Control.
Screening control, also known as yes/no control or concurrent control, focuses on meeting standards for product or service quality or quantity during the transformation process. Screening control relies on feedback processes. For example, when quality checks are used to provide feedback to workers manufacturing a product, the workers know what, if any, corrective actions to take.
Post action Control.
Post action control, also known as feedback control, focuses on the outputs of the organization after the transformation process is complete. Although postaction control used alone may not be as effective as preliminary or screening control, it can provide management with information for future planning. Post action control also may be used as a basis for rewarding employees.