Editing Interference theory (section)

====Capacity sharing====
Pashler proposed that the brain contains one mental entity where all tasks must be carried out.<ref name="Pashler"/> A real-life example of this could be going to the dentist; the only place to have cavities filled is at a dentist's office. When the brain is attempting to complete two tasks, both tasks are present in the same mind area and compete for processing ability and speed.<ref name="Pashler"/> This relates to interference theory as the tasks compete. Interference theory says that the learning of new information decreases the retrieval of older information, and this is true for dual-task interference. The dominant task of the two inhibits the other task from completion. It is presumed that the dominant task would be a new task as a previously accomplished task would already be stored in memory. The new task would, then, be completed successfully as more mental effort is required to complete a novel task, and the previously completed task would not be completed as the new task dominated the mental capacity. Just as Interference Theory states, the completion of new tasks inhibits the completion of previously completed tasks due to capacity sharing.