Certain words are used very frequently, across populations, and across situations. In the augmentative and alternative communication articles, you’ll find these words in the vocabulary of 3-year-olds, 23-year-olds, 83-year-olds, and in schools, workplaces, stores, and out on the street. What word do we use to refer to these important words that lie at the heart of everyone’s lexicons?
The words core and fringe are used often in the field of Augmentative and Alternative Communication (AAC). In general, a core word is one that has a high frequency of use value that is statistically expected when compared to a large reference corpus.
In contrast, a fringe word is one that has a low frequency of use value that is statistically expected when compared to a large reference corpus.
Core words are fairly foreseeable whereas fringe words are much harder to predict. We can guarantee you’ll say the words that, want, stop, and, to, what, and you many times today; we can’t predict if you’ll say anchovy, aardvark, pretzel, Santa, fox, boom-box, frighten, or sock – even though these are all perfectly useful and valuable words. So if you are going to teach vocabulary, you get much more bang for buck from this, that, and how than do from burger, elephant, and sing.
A Few Good Words: Using Core Vocabulary to Support Nonverbal Students by Barbara Cannon and Grace Edward, published in the ASHA Leader.