Cognition type refers to those reflective authors who are inclined to cognition words comparing to evaluation, and the rest two vocabulary types are barely occurred in this case.

Evaluation type talks about a reflective author who dominantly selects evaluation words over cognition, whereas the other two vocabulary types are barely used.

Mix type includes two kinds of circumstances of vocabulary use. It covers those who use nearly equal amount of cognition and evaluation words, and the rest two vocabulary types are scarcely used. Secondly, reflective authors can be also labeled as mix type if three or more types of vocabulary are found, and each type should be responsible for over 10% of word use.