Survival and reproduction of living organisms depend upon proper perception and processing of environmental signals. (sciencedaily.com)
So anger has some happy aspects: it is, ideally, a natural signal that somebody's behavior needs to be adjusted; it is a sign of proper moral concerns and of a proper perception of moral truths. (religion-online.org)
«There is a lot of work left to do to be able to have a proper perception of our inner self,» she says. (newscientist.com)