I've heard for a "rule" that you should not capitalize the words in the title of an article, when the title is in the form of a sentence. For example:

Pneumonia is contagious. (As opposed to Pneumonia Is Contagious.)

I'm aware that this is purely a matter of style and there are different recommended styles, but my question is: Is this non-capitalization even "a thing?"

EDIT: I've found this on Capitalize My Title website:

The other major type of title capitalization standard is sentence case. Sentence case simply means you capitalize the first letter of a sentence and nothing else as opposed to capitalizing almost every first letter in title case. It is the same across all of the four styles.

  • Doesn't seem to be the case in this guide by Santa Rosa Jr College, which includes the title: What Are You Doing in My Universe? – VTH Aug 30 '18 at 13:15
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    "Sentence case" does not mean the title is a sentence. It is the name of a scheme for capitalizing titles. Both "title case" and "sentence case" can be used on titles regardless of whether they are sentences or questions or any other form. – GEdgar Aug 30 '18 at 13:28
  • OK, I get it. Someone recommended me to use capitals in titles, but not when the title is a full sentence. I know it's about the decision, but I just wanted to know if anyone heard for this. – Jan Aug 30 '18 at 13:31
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    Titles of what? conventions vary – Azor Ahai Aug 30 '18 at 19:21
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    Like everything else about titles, that's purely a matter of choice and style; a decision for the writer or editor, within whatever house rules apply. – Robbie Goodwin Sep 16 '18 at 18:31

The general rule is that we capitalize everything but articles or coordinating conjunctions of less than five letters, unless the aforementioned are the first or last word in the title. I know of no special rule for titles-as-sentences.


As a former library cataloguer, I can tell you that in cataloguing it's usual to capitalise the first word only, except for proper names which of course take capital letters.

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