Interpersonal Process in Therapy
Professor stated it is a book we will refer to for a long time. Havent read it. Came quickly and in good condition.

Good Study Guide
This is a great textbook for ABA. It is perfect for studying for the Board Certification for Behavior Analysis (BCBA).

ABA Bible
Book is essential for any Behavior Analyists career to understand the science of ABA.

Very helpful for the field!

A laugh a minute!
Just kidding. This is a clear, concise text that I am finding to be very user-friendly. This text is not nearly as difficult to understand as Michael's Concepts and Principles of Behavior Analysis, at least for someone like myself who is fairly new to behavior analytic textbooks.

Amazing Text
This text is spectacular. This edition is a triumph. I was a bit dubious when the forward obliquely compared this book to The Beatles (The White Album), but have become more sympathetic to the perspective as I have spent more time with it. Cooper/Heron is simply the book to use in studying Applied Behavior Analysis. It's not chummy or dated like some texts of 70s (an effort to reduce the response effort of learning the material, no doubt). Instead it is complete, precise and well written. My sincere thanks to the authors. Worth twice the going price.