I know information does not have a plural form (syntaxically talking), which leads me to the following problem:

The username and password are missing. I need [this/those] information.

I feel like the right term would be "this", even though we are asking for several details... but I'm not sure at all.

  • 1
    I need this information or I need those pieces of information. – Edwin Ashworth Feb 19 '15 at 22:01

'This': 'information' is the noun for which 'this' is used as the demonstrative pronoun. Since information- is singular, this - is too, no matter what the information consists of.

  • "This information" is actually the direct object, not the subject. – Fred Bailey Feb 19 '15 at 19:29
  • Specifically, information is a mass noun. – Hellion Feb 19 '15 at 20:08
  • Unless you use data which is plural. Though it's always felt awkward to me to say "data are." It should be a mass noun too. – Martin Krzywinski Feb 19 '15 at 20:16
  • @Martin Krzywinski It's rare for data to be used as other than a mass noun taking singular agreement, in spite of its etymology. – Edwin Ashworth Feb 19 '15 at 22:03

The adjective or article "this" modifies "information," a singular, so "this" is correct. It assumes that the reader knows that "information" is referring to "username and password."

If instead you wish to use "this/those" as pronouns, you might write something like:

The username and password are missing. I need these right away.

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