Sialoliths are associated with which of the following?

The body of a letter should contain a courtesy word(s), such as "Sincerely," "Sincerely yours," or "Yours truly."

Answer the following statement true (T) or false (F)

That a person can adapt their handwriting to different surfaces, sizes, forces, etc., is an example of what Bernstein referred to as motor ________.

Fill in the blank(s) with the appropriate word(s).