This author of "How to Plan for Generalization" was one of the first to conduct empirical research on imitation and language develop and published research on the withdrawal of positive reinforcement

This major contributor first developed discrete trial training and spent much of his career publishing evidence on the effectiveness of ABA on children with autism. There is now an institute in his namesake providing such services to children with developmental disabilities in locations across the world.

This former teacher of both Brian Iwata and Mark Sundberg gave the term "motivation" to Skinner's notion of "drive" and is known for his research with establishing operations and improving precision and accuracy of behavioral terminology.

This major contributor is the director of the Pediatric Feeding Disorders program at the University of Nebraska Medical Center and after extensive research and literature reviews, has promoted behavioral approaches as the preferred method for assessing and treating feeding disorders.

Aside from creating the BACB and serving as its chief executive officer for 13 years, this major contributor helped develop BACB standards in countries where behavior analysis was still relatively new and oversaw the

This former ABAI president served as a significant contributor to instructional design through his work with precision teaching and the publication of his book, "Strategies and Tactics of Behavioral Research." He currently serves as the chair of the Board of Directors of the Cambridge Center for Behavioral Studies.

This major contributor became the chair of psychology at Florida International University in 1980, later serving as the director of the developmental psychology program. He went on to establish the behavior analysis programs at FIU and remains the current director of said programs.

This co-founder of JABA made major contributions to the understanding of how the environment influences behavior.

This major contributor is considered a "pioneering behavior analyst" and has done extensive research on scientific methods, avoidance behavior, and stimulus control. Edit(X)

This contributor serves as the clinical director for Boys Town and is well known for disseminating behavior analysis concepts and principles to a variety of audiences.