"Ary, et al is the most complete educational research text I've found."
"The students can use the information from this text as a guide when they create their own research studies as well as when they read various research studies. This text helps students to be better consumers of educational research."
"I would describe the text as being a very good introductory text for beginning graduate students. One that will provide them with a comprehensive coverage of quantitative educational research methods, and an overview introduction to qualitative research methods."