A second, related potential limitation is that areas with high frequencies of published articles may not reflect relative interest because rejection rates could be higher in some areas than in others and also the quality of research may be different across areas. Both of these factors may combine to produce differential publication rates across areas. Although such an argument may be valid over relatively short periods of time, for example, during the tenure of a single editor, it is less valid over a long period of time and across the tenure of many different editors and reviewers (unless there is a change in the mission statement of a journal). In the case of JAP, the American Psychological Association has instructed the past few editors not to accept articles that deal with “clinical and applied experimental or human factors, for which there are more appropriate American Psychological Association journals” (American Psychological Association, 2007). This helps explain the drop in published articles in JAP on human factors after 1983.