`Apologies Richardkeatinge and Whatamidoing, my original query does seems a bit confusing after re-reading it myself. I do agree with both of your logical comments regarding subspecialties and the practice of psychology. My only point was that the Everly source clearly places occupational health psychology as a specialization within health psychology? However psyc12 states below that occupational health psychology is not a specialization/sub speciality, and a completely ``distinct field`` should this 1986 source be relied on at all, as a key reliable source, in either this article, or the health psychology article?     :::::`