What is the difference between their and theirs, and how is should use them? Sometimes I get frustrated, because I do not see their difference.
word usage - How to use "their" and "theirs"? - English Language ...
8 Their X just means X belongs to multiple people. If each of the "their" has an X, then you are talking about multiple Xs, and should use the plural form of X. If everyone in the "their" group is sharing a single X, you would use a singular X. An each can emphasize the "everyone has their own X" and can override this.
pronouns - Noun after "their" must be plural? - English Language ...
Is it right to write “big corporations must work on their marketing strategies” in academic writing? Our instructor said you can't use pronouns like 'their' in academic writing.
The use of 'their' in academic writing - English Language Learners ...
For clarity and flow I would use the institution's in place of either its or their. their has an odd clumping effect as you intuit. its could also refer to the model's "particular size and other conditions", rather than those of the institution.
A sentence like "Parents must pick up their child before 5" is fine, because saying "children" would imply parents have multiple children each, whereas in the context of a school it's reasonable to expect 1 child. Here "their child" and "their children" would mean slightly different things.
The general rule is that, when talking about things, you use its for singular and their for plural. There is one exception relating to their, for which the Oxford Dictionary defines two usages: of or belonging to people, animals or things that have already been mentioned or are easily identified used instead of his or her to refer to a person whose sex is not mentioned or not known As ...