English language teachers can gain insights from brain research. This article is one example. Excerpt:
Researchers have found evidence that our vocabulary is held together by keywords in word-networks in our memory.
The findings, published in the Journal of Memory and Language, reveal how people are able to more quickly and accurately recognize certain keywords than other similar words with only small letter differences. The difference between the words is measured by their position relative to their closest neighboring keywords in a group of 20, 000 similar-sounding English words.