Becoming more aware of the progress that scientists have made on behavioral fronts can reduce the risk that other natural scientists will resort to mystical agential accounts when they exceed the limits of their own disciplinary training.2012 January 23, Stephen Ledoux, “Behaviorism at 100”, in American Scientist, volume 100, number 1, United States: Sigma Xi, →ISSN, →OCLC, archived from the original on 10 Nov 2013, page 60:
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Human sciences, Linguistics, Sciences That forms agent nouns.
Even if the suffix be formally identical with the agential suffix, it has not the same function.1918, Henry Bradley, A New English Dictionary on Historical Principles, volume IX, page 922, column 2:
Human sciences, Linguistics, Sciences An affix that forms agent nouns.
Semantically, a majority of agentials refer to avian vocalization. Examples are: screamer, whistler, warbler, trumpeter, and the suffixless chat.1986, Geolinguistics, page 19: