The Performance Management Lab includes highly trained and skilled undergraduate students specializing in Organizational Behavior Management. They work as organizational consultants and research assisants under the supervision of Dr. DiGennaro Reed and graduate students. The following students were invited to join the lab after a rigorous interview process involving structured interviews, work sampling, and role plays.


  • Rylie Sant
  • Natalie Lamb
  • Kelsey LaRoche
  • Aristotle Nakos
  • Halle Melton
  • Alyssa Biles

Graduate Student Colleagues

Matt is a third-year graduate student in the Performance Management Laboratory at the University of Kansas. He worked with the lab to receive his Bachelor’s in Applied Behavioral Science. Working under the supervision of Dr. DiGennaro Reed, he developed and emplaced interventions to improve employee performance at human service organizations, and consulted on systems analysis with other programs on campus affecting the transition of incoming student veterans. Matt was commissioned into the US Army in May of 2020 and returned to active duty. He is pursuing a Master’s in Applied Behavior Analysis with a focus on Organizational Behavior Management in hopes of understanding systems-level interventions that could be used to benefit the lives and performance of service members across multiple echelons.

Marren joined the the Performance Management Laboratory in Spring 2020. She received her Bachelor’s degree in Psychology from Park University in Parkville Missouri. After working in the human services field for several years, she applied to graduate school and earned her Master’s degree under the supervision of Drs. Jim Sherman and Jan Sheldon at the University Kansas. Her Master’s thesis focused on increasing physical activity in adults with intellectual and developmental disabilities. Currently, her research interests include staff training, improving fidelity of token economy implementation, and increasing mask-wearing compliance in staff working with adults with intellectual and developmental disabilities. Marren is currently working as a behavior analyst at Neurorestorative.

Marren Leon-Barajas, MA, BCBA

Undergraduate Student Colleagues

Matthew Laske, MA

Abby is a fifth-year graduate student in the Performance Management Laboratory at the University of Kansas. Prior to attending KU, she received her Master’s degree in Applied Behavior Analysis and Organizational Behavior Management at Florida Institute of Technology. Previously, her research has evaluated effective and efficient staff training procedures for those who work with individuals with disabilities, as well as the influence of contextual variables in the workplace on staff performance. Presently, she is interested in enhancing the professional repertoires of mid-level managers in human service settings. Abby has experience consulting with organizations to assist in their training and systems-level initiatives. She hopes to go into academia after graduating, while maintaining a consultative relationship with an organization to serve as a practicum site for her students.

Abigail Blackman, MS, BCBA

Grace Bartle, BA

Matt Harbison, BA

Performance Management Laboratory

Sandra Ruby, MA

Butler is a first-year graduate student in the Performance Management Laboratory at the University of Kansas. After receiving his bachelor’s degree in Psychology at the University of Florida, he obtained a master’s degree in Applied Behavior Analysis at the University of South Florida under the advisement of Dr. Andrew Samaha. He served as the assistant practicum coordinator at the University of South Florida and facilitated collaboration between master’s students and supervisors at practicum sites. His research interests include staff training and supervision practices in human service provider settings.

Matthew Laske is a second-year graduate student in the Performance Management Laboratory at the University of Kansas. Matthew completed his master’s degree in Industrial-Organizational Psychology and Human Resource Management at Appalachian State University working under the guidance of Dr. Timothy Ludwig. He completed his bachelor’s degree in Behavioral Sciences from Western Michigan University. Matthew is a Distinguished Scholar through the Cambridge Center for Behavioral Studies (CCBS). In that role, he assists the CCBS’s Commission on Behavioral Safety in documenting the best behavioral safety programs in the world. His research interests include the investigation of effective communication, public speaking training, and behavioral safety. In his free time, Matthew enjoys basketball, biking, bouldering, hiking, and painting along with Bob Ross. 

Sandra is a fourth-year graduate student in the Performance Management Laboratory at the University of Kansas. She completed her bachelor’s degree in Psychology at California State University, Fresno, while managing Dr. Steven W. Payne’s P.A.W. Lab and working as a Registered Behavior Technician. Under the mentorship of Dr. Florence D. DiGennaro Reed, she received her Master of Arts in Behavior Analysis at the University of Kansas. During her graduate studies, she has consulted with a human service organization serving adults with intellectual and developmental disabilities and a behavioral-based dog training company. Her current research interests include efficient staff training practices, technology-based interventions, and professional development.

Grace is a second-year graduate student in the Performance Management Laboratory at the University of Kansas. While completing her bachelor’s degree in Applied Behavioral Science, she pursued the Organizational Behavior Management Research and Practice specialty area under the supervision of Dr. Florence D. DiGennaro Reed. She worked as a student consultant helping a nonprofit company improve aspects of its performance management systems. Her current interests include applied and translation research on feedback, leadership development, supervision practices, and procedural integrity of behavior analytic procedures. She also enjoys teaching and mentoring undergraduate students. In her free time, Grace enjoys walking around Downtown Lawrence and trying new restaurants.

J. Butler Braren Turner, MA, BCBA