In general, do not capitalize the words in names of theories. Capitalize only people's names, for example, Gardner's theory of multiple intelligences and the cognitive learning theory. Note: You should always capitalize place and people names (when they appear in names of theories, tests, or anything else).

Should theories be capitalized MLA?

Theories aren't capitalized or highlighted with italics, but you do capitalize someone's name when it's part of a theory: Dr. Goodman's theory of whole language. Einstein's general theory of relativity.

Should you capitalize theory of evolution?

Is the theory of evolution capitalized? No. You only capitalize proper nouns. Evolution is just a word to describe what had long been observed occur in nature.