Linda J. Hayes, PhD, is a Distinguished International Professor at the University of Nevada, Reno. She cofounded the behavior analysis program at the University of Nevada, Reno; and has served two terms as president of the Association for Behavior Analysis International. She has published works on behavior theory and philosophy from an interbehavioral perspective for four decades.Mitch J. Fryling, PhD, is professor and associate dean in the college of education at California State University, Los Angeles. He has authored and coauthored many scholarly publications, primarily in the area of behavioral theory and philosophy, especially as it pertains to complex human behavior and system development in behavior analysis. He is current editor of The Psychological Record.