Anwer question please?

Question

Is you a demonstrative pronoun? Is yourself a demonstrative pronoun? Is them a demonstrative pronoun?

Answer 1

A demonstrative pronoun stands on its own, replacing rather than modifying a noun:
Example:
This is good.
I like those.

There are five demonstrative pronouns in English; this, that, these, those and the less common yonder (the latter is usually employed as a demonstrative adjective; even so it is rarely used in common English).

As is obvious from the examples, English employs the same words for both types of demonstratives. Sometimes a difference is made specific by using the pronoun one (this one, those ones).

This is not the case in many other languages.

So, no, I don't think those you stated are demonstrative pronouns.

Answer 2

Demonstrative Pronouns

Demonstrative pronouns can function by themselves as substitutes for specific nouns. The speaker usually uses such an independent demonstrative pronoun when he or she physically or verbally gestures towards something. The writer should only use such an independent demonstrative pronoun when the object of the gesture is completely and clearly identifiable. The demonstrative pronoun does not replace an entire preceding idea. We classify demonstrative pronouns according to number only.

FORMS:
Singular Plural

this these
that those

Example:

This needs to be repaired.

The demonstrative pronoun this is referring to some
object (a washing machine?) that the speaker is talking
about.

Source: http://www.ucalgary.ca/UofC/eduweb/grammar/course/speech/1_2f.htm