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, "action of criticizing," from critic + -ism . Meaning "art of estimating literary worth" is from 1670s.
When psychologists study criticism as a type of human behavior, they do not usually study it "in general" – such a general study is often considered to be more a philosophical concern. Psychologists usually study it in specific contexts and situations. The reason is partly technical (it is difficult to construct and prove universal generalizations about criticism as a human behavior) and partly practical (it is more useful to understand particular behaviors which are of direct practical concern).
The phrase " fools rush in where angels fear to tread " from Part III has become part of the popular lexicon, and has been used for and in various works.