A cautionary note.

In response to B. Gillen's (see record 1974-11898-001) readability and human interest scores of textbooks, R. A. Youth comments that Gillen overlooked the fact that at least 6 of the evaluated books have come out in revised editions, which may be more readable and human-interest oriented than the original editions. The author suggests a comparison of Flesch ratings of original vs revised editions. (PsycINFO Database Record (c) 2010 APA, all rights reserved)