UX Firm

What Our Clients Say

Our clients say great things about us

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UX Firm is a top-notch research firm

I had the pleasure of working side-by-side with Carol during a somewhat long-phased summative testing project for a medical device coming to market. Not only did UX Firm deliver, they were also flexible, knowledgeable, and a phenomenal catalyst for the project’s success. Without Carol’s expertise and guidance, we would not have been able to pass validation. UX Firm is a top-notch research firm and comes highly recommended.

Deb Penny, Sr. Lead

HF/UX Engineer, ADI


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Leader in the field of usability testing

Carol is the consummate professional and a leader in the field of usability testing. You can count on her to meet any challenge with cogent, articulate and insightful analysis. She knows her craft and is always seeking new ways to innovate and add value.

Diane Cherry, President/Founder

The Cherry Law Firm

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I’m very happy that we trusted in UX Firm

UX Firm has been a great partner to help us prepare the usability study for our FDA submission. They have helped us in all the steps of the process, always open for discussion and giving great feedback on our product and its testing. We had to face difficulties due to the pandemic and the ban on international travel, but those issues were not reflected in the usability study because they adapted quickly and helped us to manage the study successfully even in that scenario. I’m very happy that we trusted in UX Firm and I’m sure we will continue to do so in our future developments.

Borja Gonzalvez

Product Manager, Nuubo

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Dr Barnum is a consummate professional

I met Dr. Carol Barnum, after an extensive search for a local professional to assist with FDA requirements for human factors evaluation and submission for a De Novo medical device. Her company and her personal experience and efficiency checked every box required to fulfill my needs but her personal integrity far exceeded both my expectations and initial goals.

Dr Barnum is a consummate professional, engaging, intelligent but most importantly, assures that all matters remain exactly as required to stay within the strict walls of the governing body and their extensive requirements. Her diligence saves the client time and grief and possible rejection and is simply necessary to succeed. She becomes as committed to your success as you are to the endeavor. She repeatedly shows respect for your ideas and efforts.

It was and remains a pleasure to know her and work with her company. Should consulting needs arise, I will not hesitate to reengage UX Firm.

Suzanne L Lowry MS MD FACOG

Safer Surgeries Medical Devices, CEO and Inventor

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She offered constructive and meaningful feedback

It was an absolute pleasure to work with Carol on our research survey project. Carol took the time to get to know our team and fully understand our work and community before diving into our project. She offered constructive and meaningful feedback throughout our partnership. Her insights helped us develop and finalize a successful research survey.

Anna Morgan-Barsamian

Senior Manager, Training & Education, NaRCAD

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Professional and keen on sharing her vast knowledge with the whole team

I had pleasure to work with Carol and her team for several months. We outsourced to UX Firm the summative usability validation testing for FDA 510(k) submission of our new ECG Recorder and Mobile Application. The communication, expert knowledge, and support from Carol during the whole project were incredible. Besides her great experience, she is an amazing team player who can quickly adjust the testing strategy in the fast-paced environment of an agile project. She is professional and keen on sharing her vast knowledge with the whole team. I can definitely recommend her services and I wish to work with her during our next product release.

Alicja Wianecka

Hardware UX Designer, Medicalgorithmics S.A.


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Providing a high level of human factors knowledge was beyond our expectations

We selected UX Firm in a competitive bid situation to coordinate and conduct human factors formative and summative evaluations as a collaborative effort on behalf of GEDSA members. The studies assessed the verbiage and format of the instructions for how to properly fill, verify dose and administer the contents of an ENFit Syringe. We can’t be happier with our choice of UX Firm for this project. Their ability to coordinate with multiple medical device manufacturers on one project while providing a high level of human factors knowledge was beyond our expectations.

Mike Cusack

Executive Director, GEDSA (The Global Enteral Device Supplier Association)

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High-quality research and reporting skills

My company had the privilege to work with UX Firm on an extensive human factors usability study regarding a US FDA Class II medical device in development. We were extremely pleased with our choice of UX Firm for this project. Their professionalism, high-quality research and reporting skills aided in a successful 510(k) clearance.

Vice President of Quality and Regulatory Affairs, Medical Device Manufacturer


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Constructive and unbiased feedback

I want to extend my sincere thanks to both you and your team for your assistance with the Green Engage project here at IHG. Your scientific approach with measurable, objective results helped us greatly in evaluating and improving the project. I attribute the fact that our usability scores improved from a 54 to over 90 in the three usability studies we conducted along the course of the project. Your constructive and unbiased feedback both validated our design and provided clear guidance on the areas of the site that required additional attention, which allowed us to greatly improve the product prior to launch.

Colin Erven

Manager, Project Governance & Team Support, IHG (Intercontinental Hotels Group)

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We have gained many valuable insights

The team from UX Firm provided enormous insight in scoping the project and creating the right approach for the challenge. After finishing phase 1 and 2 of the user testing, I can say that we have gained many valuable insights thanks to the guidance and excellent work UX Firm has provided under very tight timelines.

Andreas Kaufmann

Vice President of Marketing, School Specialty

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Expect the unexpected.

Expect the unexpected. Usability testing will challenge those things that you take for granted… and give you the tools to improve your products – sometimes by changing the most simple elements.

Mary Beth Westmoreland

VP for Research and Development, Ipswitch


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Absolutely delighted and immediately ‘got’ it

We were doing a usability test with Carol Barnum. Our client, the director of an international high-end hotel website who also happens to have a background in marketing, was observing. When we got to the end of the day, we had a short time while we finalized some data, and Carol graciously took this client into the lab and let him sit in the participant’s chair and run through one of our scenarios while we finished up.


He was absolutely delighted and immediately ‘got’ it. He was able to take off his director’s hat and immediately put on his user’s hat in an amazing and completely unexpected way. He offered some great insight to Carol about his own project. In that brief period, we gained an ally who will be able to better resist the impassioned pitches of his digital agency of record and who now will come to the UX group and ask us to check out what is truly best.

Laurie Gray

Project Lead for a hotel group's loyalty program

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Extremely high level of competence and professionalism

My company hired Carol to assist in a usability study for a conceptual mobile application. Carol was able to quickly get up to speed on the goals of the study. She was able to recruit a difficult segment of candidates, direct the team throughout the tests, all the while maintaining an extremely high level of competence and professionalism. Carol played a key role in the success of our study and I look forward to working with her again soon.

Matthew Perry

CEO, Mobients

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