Some journals or style guides require papers to have a head that is running. In the event your document includes page numbers towards the top, the running head can precede the page number or show up on the opposite edge of the page. The running head is placed in the upper left in APA style.
The publisher often requests running heads for practical reasons. It really is desirable to have every page clearly defined as being an element of the paper. In the event the paper is printed as a hard copy additionally the various pages fall to the floor or are mixed up, having a running head and page number for each page helps your reader to put all of the pages back in the order that is correct. Even readers who are viewing an version that is electronic of paper may appreciate the clear labels, especially if these are generally sorting through many documents simultaneously.
Exactly what are the requirements?
The specific requirements for running heads vary. Generally speaking, running heads should always be brief. Read more