It takes memory to learn Grammar, but then Grammar facilitates memory performance.
Verbal Memory Pegs: Concepts by the virtue of their organization and their verbal labels improve memory performance.
If you need to remember animals, you may classify them as “farm” animals, or “domestic pets” etc., which in essence reduces the number of chunks necessary to be processed..
Grammar: The rules of morphology and syntax supply organization to the flow of words in speech (or Sign Language). Hence words (or signs) presented in grammatical order will be easier to remember: For example, in the following lists of 18 words each, which is list is easier to recall:
1. Cat, to, paper, singing, sits, sheep, cards, lovely, is, sun, paper, cutting, some, his, in, who, a, friend.
2. A cat sits in the sun singing to his lovely sheep friend who is cutting some paper cards.