The passive voice is a hoax $100 if you can find a journal that requires it.(allendowney.blogspot.com)
allendowney.blogspot.com
The passive voice is a hoax $100 if you can find a journal that requires it.
http://allendowney.blogspot.com/2012/04/passive-voice-is-hoax.html
I think the requirement was that people should not use the first person pronoun. Consider this 1968 commentary in JAMA, http://jama.ama-assn.org/content/203/4/283.extract : "When a psychiatric journal published an article in which the author used the first person singular throughout, the editors apologized in a footnote for this departure from "normal" journal practice."
Those who didn't ignore the requirement responded by using the passive voice, as in "the temperature was measured", or circumlocutions like "the authors measured the temperature". People saw a side-effect - passive voice - and thought that that was part of the 'impersonal' writing style of science.