When do I use の/こと as a nominalizer, and when do I use というの/ということ?

Question

I'm studying nominalizers and don't understand when to use の/こと and when to use というの/ということ.

For example, in the sentence:

こんなによく[遅刻]{ちこく}をするというのは[問題]{もんだい}ですよ。

Could I say:

こんなによく[遅刻]{ちこく}をするのは[問題]{もんだい}ですよ。

Is there any rule to choose の/こと or というの/ということ?

I'm no native speaker, so don't take my word for it, but I wonder, is it similar to "(Often) Coming too late is a problem." VS "That you (often) come too late (that) is a problem." ? — blutorange, Aug 19 '13 at 17:26

score 3 · Answer 1 · answered Aug 22 '13 at 03:52

As far as I know, they are generally identical in meaning and function. However, adding という seems to add emphasis to the meaning of the preceding phrase. I do not believe there is any general rule separating the usage of the two. (As long as you're using の and こと properly, of course.)

It's hard to use Google to find sources to back this up (besides Yahoo Answers, which isn't much of a source).

When do I use の/こと as a nominalizer, and when do I use というの/ということ?

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