Researchers studied whether the use of automatic natural language processing (NLP) on lexical and discourse/topic variations affects reading comprehension for students in grades 3-6

• RQ1: “Are there identifiable dimensions of lexical variation among these texts?”
• RQ2: “Are there identifiable dimensions of discourse-genre variation among these texts?”
• RQ3: “Thus, what are major differences among third- to sixth-grade texts (which may in turn indicate sources of reading comprehension difficulties for struggling readers)?”