Lyman Casey, Ph.D

Partner and Co-Founder

With an extensive background in cognitive psychology, interface design and business strategy, Lyman Casey brings a broad and pragmatic perspective to our work at Centralis.

Prior to co-founding Centralis, Lyman served as Director of User Experience at the leading Chicago e-commerce integrator Giant Step, now part of Publicis Groupe.  In that role, he established the company's User Experience practice and built a team recognized as a leader by industry analysts such as Forrester Research. His prior technology experience includes the design and development of custom expert systems software for Fortune 500 clients.

Lyman holds a doctorate in Cognitive Psychology from Northwestern University and a bachelor’s degree from Williams College. In his free time, Lyman is a gadget hound, a runner, and most of all a doting dad.


Kathi Kaiser

Partner and Co-Founder

As co-founder of Centralis, Kathi leads our team in creating great user experiences. As a researcher, Kathi’s expertise lies in crafting research protocols that provide rich, relevant insight into user behavior. As a designer, she applies that insight to creating products that help users accomplish their goals while helping clients accomplish their business objectives.  

Kathi’s experience in human-computer interaction spans fourteen years and includes engagements at notable user experience firms HannaHodge and Doblin Group. She is an authority on user-centered design who serves as an adjunct faculty member at the Institute of Design at the Illinois Institute of Technology. Kathi holds a Master's degree in Social Science from the University of Chicago and a BA in Psychology from Georgetown University.

When out of the office, Kathi can often be found with her family and friends, listening to ‘80s music or cheering on the Cubs at Wrigley Field.

Matthew Scholl

Vice President, Director of User Experience

Matthew Scholl has extensive experience partnering with clients to create solutions that balance user needs with client business objectives. Whether facilitating usability tests, conducting contextual user research or designing wireframes, he is a patient, careful observer and is persistent in his pursuit of detailed, actionable findings and recommendations.

Prior to joining Centralis, Matt spent 10 years at Accenture in roles including product manager and user experience consultant. He has worked on both consumer-facing websites and business-to-business web applications and his past clients include software manufacturers, insurance companies, and electronics manufacturers. He holds a Masters degree in Human Computer Interaction from the University of Michigan and a BS in Education from the University of Wisconsin-Milwaukee.


Carol Youngquist

Senior User Experience Specialist

Drawing on her background in industrial engineering, Carol Youngquist is dedicated to improving the usability of interfaces, products, and services. Carol's work in user research and design is further informed by her experience with human factors and statistics. She helps communicate ideas between diverse audiences through clear, direct communication. And in her spare time, Carol is known to take online courses in behavioral economics and social psychology.

Prior to her time at Centralis, Carol designed, conducted, and led user research efforts for critical parts of Northwestern University's website, including the homepage. With Accenture, Carol led usability studies, project management, and design for mobile versions of internal applications. Carol holds a BS from the University of Illinois at Urbana Champaign in Industrial Engineering.

Emily Moser


Emily Moser uses her research experience to combine user needs and client goals into usable solutions. With a strong technical background in coding, Emily works to find implementable strategies while understanding the work required, and can explain processes clearly and precisely to a broad audience.               

Emily's experience includes analyzing and providing improvements for the Digital Youth Network, a part of the NSF's cyberlearning initiative. At Undertone, she created and led rounds of usability studies for internal websites, providing feedback and recommendations. Emily holds a BS in Interactive and Social Media from DePaul University.

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Claire Mallory


Claire Mallory’s endless curiosity, critical thinking and deep listening skills make her a valuable asset on research and design teams. She is comfortable in highly iterative environments and recognizes the power of teamwork in solving complex problems.

Since joining Centralis, Claire has helped our clients optimize the user experience of shopping for health plans, planning home improvement projects, and shopping for wine.  Prior to joining Centralis, Claire was a Designer-in-Residence at DESIGNATION, a leading UX/UI bootcamp. 

Claire received her bachelor’s degrees in Piano Performance and Art History from Lawrence
University and a master’s degree in Collaborative Piano from the University of Colorado at


Sam Bergman

Business Development Specialist

With several years experience in marketing research, Sam Bergman brings a sophisticated understanding of the importance of consumer research and meaningful user experience. He uses this experience, along with his academic background in marketing and economics, to help continuously move Centralis forward. He is passionate about collaborating with clients to meet their usability and user experience needs and making sure clients always have a fulfilling experience working with Centralis.

Sam holds a BS in Marketing and Economics from the Ohio State University. When not in the office, Sam can frequently be found running, biking, exploring Chicago or rooting for the Ohio State Buckeyes and the Minnesota professional sports teams.


Ket Yosef


Ket is the first point of contact for those new to Centralis. Her work includes facilitating behind-the-scenes initiatives, accounting, and generally making things run smoothly for clients and staff in the office.

Out of the office she spends time trying to rope her friends and family into D&D campaigns and picnicking whenever possible. She is a published illustrator and received her BS in Animation and Game Art from DePaul University.