Controlled Oral Word Association Test write down the words provided by the participant on a piece of paper. The whole examination usually takes 5–10 minutes. Controlled Oral Word Association Test Controlled Oral Word Association Test, abbreviated COWA or COWAT, is a verbal fluency test that measures spontaneous production of words belonging to the same category or beginning with some designated letter. The test was first called the "Verbal Associative Fluency Test", and then was changed to the "Controlled Word Association Test". The participant is usually asked to name words beginning with a letter, excluding proper nouns, for one minute and this procedure is repeated three
Bixby letter imitate Lincoln's handwriting, calling it "halting and awkward and makes his forceful hand appear like a child's scrawl". Tobin's facsimile also errs when compared to the original text of the letter published in Boston newspapers; adding the salutation "To Mrs Bixby, Boston Mass", misspelling the word "assuage" as "assauge", omitting the word "to" after the word "tendering", changing the plural "words" into "word", not capitalizing the words "freedom" and "republic", missing the recipient "Mrs. Bixby" on the bottom left, and combining the original three paragraphs into one. Huber's Museum corrected the spelling of "assuage" in their version of the facsimile.