Examining Your Textbook for Comprehensibility.
Suzanne F. Clewell, Anne M. Cliffton · The Journal of Reading · 1983
used by elementary school students in an attempt to identify the features of a text that affect its comprehensibility. This research indicates thatthe textbooks themselves may be one source of students' comprehension problems. In the past, vocabulary difficulty and sentence length have been the major criteria for determining a text's comprehensibility. That is, it has been assumed that short words and