​​​​​​​​Meet Our Staff



Stacey D. Simonds, MA, a Board Certified Behavior Analyst, is the Clinical Director for PBM.  Ms. Simonds graduated with a Bachelor's of Arts Degree with a concentration in Applied Behavior Analysis from the University of South Florida.  She continued her education at USF to gain her Master's of Arts Degree in Applied Behavior Analysis.  She graduated as an active member of Phi Kappa Phi Honor's Society.  She has over 18 years' experience working with children with varying disabilities.  Prior to becoming Board Certified in 2002, Stacey began working as a behavior assistant under a Board Certified Behavior Analyst working with children with Autism conducting Verbal Behavior Therapy.  Since becoming Board Certified, she has worked in many different capacities with children and adults with varying disabilities.  Her expertise includes supervising, creating and implementation of Verbal Behavior Therapy, along with extensive experience with behavior reduction procedures and skill acquisitioning.  Along with attending Behavior Analysis and Autism workshops regularly, Stacey has presented professional posters and symposiums at conferences for both the Florida Association of Behavior Analysts and the National Association of School Psychologists.  Stacey is a certified Professional Crisis Management Instructor.  She is an active member of the Association for Behavior Analysis International. 


Crystal Alderman, B.S., BCaBA Board Certified assistant Behavior Analyst, joined the PBM team in April of 2012.  She currently works as a BCaBA providing one on one therapy to children with Autism and other developmental disabilities.  This experience has provided Crystal the opportunity to work under the supervision of a BCBA, resulting in the acquisition of extensive knowledge and skills.  She has over 5 years’ experience in various teaching strategies such as Discrete Trial Training, Verbal Behavior Therapy, and Behavior Reduction Procedures.  She also brings lifetime experience, having a family member diagnosed with ASD.  Crystal has earned her Bachelor’s degree in Psychology with a concentration in Applied Behavior Analysis.  She is currently completing her Master’s degree in Psychology with a concentration in Applied Behavior Analysis and is planning to pursue her BCBA.  Crystal is honored to work with her clients and help improve their quality of life.


Nichole Argiro, MA a Board Certified Behavior Analyst, joined the PBM team in March 2013.  She graduated with a Bachelor's of Arts degree in Psychology and a minor in Applied Behavior Analysis in December 2013 from the University of South Florida.  As an undergraduate, Nichole volunteered as a research assistant in a study that was later published in the Journal of Applied Behavior Analysis. She also has experience as a Teaching Assistant at the University of South Florida's ABA minor program.  Nichole became board certified as a BCBA in March 2017 with a Master's degree in Applied Behavior Analysis.  Prior to being certified, Nichole worked as a behavior therapist supervised by Stacey Simonds, BCBA.  She has experience working in the clinical, school, and home environments.  Nichole is passionate about improving her client's overall quality of life by selecting research based ABA interventions. 


Rebecca Click, MA, LBA, ​a Board Certified Behavior Analyst, ​joined the PBM team in October, 2016.  She currently serves as the Executive Director at North Carolina Solutions and provides consultative services across multiple states. She studied Behavior Analysis at West Virginia University, earning her BA in 1996 and continued her education at the University of North Carolina at Wilmington, where she earned an MA in 1999. Rebecca completed her Master’s Thesis entitled Stimulus Equivalence: Investigating Learning Processes in Children under the advisement of Dr. Carol Pilgrim. Rebecca has been a Board Certified Behavior Analyst for over 16 years and has had the opportunity to work in a variety of settings gaining experience in Experimental Analysis of Behavior, Organization Behavior Management, Positive Behavior Support, and in the treatment of Autism Spectrum Disorders. She also has significant experience advocating for children and families through participating in IEP meetings and legislative efforts. When not working, she loves spending time with her 2 active sons, practicing Martial Arts, traveling, and watching football.

Charles Knoppel, MA, a Board Certified Behavior Analyst, joined the PBM team in August of 2014. He graduated with a Master of Arts degree in Exceptional Student Education in May 2013 from the University of South Florida. Charles has completed Florida state-approved programs in Reading instruction, as well as in English for Speakers of Other Languages (ESOL). Upon completion of his ESE degree, he went back to graduate school at USF in Applied Behavior Analysis. He became board certified in 2014. Prior to becoming certified, Charles worked as a behavior therapist, working with children of varying exceptionalities in multiple settings. He is passionate about helping children and their families achieve their goals through the use of research-based ABA strategies.



​Marcus Pearson, Behavior Technician, ​joined the PBM team in May of 2017.