Try out the CCAB

Contact us to find out more about how to use the CCAB in your research. We can send you a test kit to try the CCAB and examiner interface for yourself, and we'll help you every step of the way, answering any questions you may have.

Matthew is a software engineer at NBS. He primarily contributes to the development and timing validation of Presentation, the stimulus engine used in the CCAB.


Matthew’s background is at the intersection of technology and science, where he develops tools that scientists can rely on to perform ground-breaking research.

After co-founding NBS, Mr. Pebler created Presentation®

— the most powerful stimulus delivery software system for neuroscience, which has advanced the research of tens of thousands of scientists around the world for 20 years. He continues to utilize his 24 years of software development experience to ensure a solid foundation for every piece of technology NBS creates.


Mr. Pebler has a BS and MS in physics, from Yale and UC Berkeley.

Mr. Kahly serves as Research Associate at NBS, where he is responsible for ensuring the smooth day-to-day operation of NBS’s research initiatives.

After finishing her degree in Cognitive Psychology at UC Santa Cruz, Dr. Geraci joined NBS as a Content Developer in 2005. She has learned and grown with the company, honing her research skills, programming, and business acumen to become Director of Product.

Dr. Geraci has overseen the addition of myriad Presentation features over the years and continues to innovate with the development of CCAB testing and advanced data analysis.

Dr. Hall joined NBS as the Research Operations Director in 2021, and oversees research initiatives and the development of the CCAB.


During her graduate studies in linguistics at Northwestern University, Dr. Hall obtained extensive training in conducting behavioral experiments, with a focus on psycholinguistics and the representation and processing of syntactic constraints. Currently, Dr. Hall is focused on making cognitive testing more accessible to under-served populations, including leading translation initiatives to bring the CCAB to speakers of varied languages.

Dr. Woods is a co-founder and CEO of NBS who has helped direct the development of Presentation® software for the past 20 years.

During Dr. Woods’s long research career in cognitive neuroscience at UC Davis and the VA, he developed early versions of selected CCAB tests.


In 2017, Dr. Woods moved to NBS where he is currently CEO and the PI on an NIA-funded SBIR grant that supports normative data collection using redesigned CCAB tests that incorporate consensus ASR, neural text-to-speech, and tele-medical control through the CCAB Examiner interface.