September 21, 2026
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5 minutes

Rethinking How We Design and Innovate in an Agentic AI World: Key Takeaways from DDX

‍Was human-centered design all wrong?

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No, but it fails to capture the whole picture.

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Don Norman introduced human-centered design (HCD), the approach of putting people and their needs at the center of the design process, in the 1980s and almost 50 years later at DDX San Diego 2026, he challenged the philosophy.

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Human-centered design gave the industry an important shift in perspective, paying close attention to the people who would actually live with what we create, but there’s tension. Design can create tremendous value for people while also creating unintended consequences for cultures, communities, organizations, and the world around them.

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If we optimize for the person in front of us, what happens to everyone and everything outside the frame?

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And as technology becomes increasingly agentic, that broader view becomes even more relevant. We're no longer designing only things that people interact with. We're increasingly designing systems that can act, make decisions, and influence what happens next.

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Summary

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    • Human-centered design does not capture the whole picture
    • New philosophies emerge including life-centered design, intelligence-centered, human-agent centered design, and agent-centered design
    • Four shifts matter most in the age of agentic AI: design for the system, not just the user; turn frameworks into prototypes; study behavior over stated needs; and translate insights and decisions into the language of the business
    • The future of design is about what you do with what you know
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    Emerging design philosophies

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    Life-Centered Design (LCD) expands the focus from the individual user to the larger living system that the product or service exists within. It seeks to align design decisions with global goals such as the United Nation’s Sustainable Development Goals.

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    Intelligence-Centered Design (ICD) and Human-Agent Centered Design (H-ACD) are extensions of HCD where AI plays an active role in the design process alongside human intelligence, each learning from, making decisions, and mediating the process.

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    Agent-Centered Design (ACD) puts AI agents at the center as the primary participant in the process, agents building for agents.

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    Key elements of design and innovation in an agentic world

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    Start with the people, not the product

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    Good experiences have always started with deep understanding of the people who use the product, service, or system. Needs, expectations, and priorities are shaped by environment, so what works in one market, organization, or culture can't automatically be treated as a universal truth for all.

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    That's why ethnography and other forms of contextual research remain so valuable. Before asking what we should build, we need to understand the world people are navigating.

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    Questions to ask:

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    • Who are we really designing for?
    • What assumptions are we bringing from our own environment?
    • What would happen if this design enters a different context?
    • What are users' stated choices and how does that differ from their actual behavior?

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    The discipline of understanding people hasn't gone anywhere. It's just being asked to stretch further, to the systems, risks, and impacts beyond individuals.

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    Design for the system around the human

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    Behavior is shaped by systems, organizational structures, constraints, and the decisions made around you, so those factors are part of what we are designing for. Agentic AI makes this deep understanding of context even more important.

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    When AI can act, make decisions, and influence what happens next, it becomes a key part of the system. Therefore, design has to account for the relationship between humans and their agents including how they work together, what artifacts are created along the way, how do they communicate, what decisions does AI make and what are its responsibilities.

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    Questions to ask:

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    • What happens outside the immediate experience?
    • How might the system change over time?
    • How do decisions get made? What's the logic behind them?

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    One practical takeaway is to spend more time understanding what people actually do, not just what they say they do. Diary studies, observation, prototype testing, and live site testing can all help surface what people may not be able to articulate themselves. Rather than simply asking “why,” ask, “What drove you to make that decision?” This is an open question to prompt an honest explanation of what influenced their thinking and led them to take a certain action.

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    Do more "design doing"

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    Design has no shortage of frameworks, methodologies, books, and white papers. While these give us useful ways to think, real change only happens when teams transform what they’ve learned into something tangible. In the end, impact isn't measured by the depth of your knowledge, but by what you actually create with it.

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    Question to ask: What's the smallest thing I could do to build or test this idea this week?

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    A simple prototype will reveal insights that hours of discussion never could. A real interaction exposes the hidden gaps between what people say and what they actually do. A quick experiment tells a team far more than another round of debate.

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    At its best, good design thinking must always lead to good "design doing."

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    Earn influence by translating value into the language of the business

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    Research and design often sits in the middle of an organization. Leadership sets direction, research gathers insight, design shapes the experience, then implementation follows. When each function speaks a different language, intent can get lost along the way.

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    Designers and researchers are inherently connectors. We bring together different perspectives, make sense of complexity, and help people see how decisions affect one another. But we aren't often in the room when the decisions themselves are being made. Policy, process, business models, and organizational structures are all forms of design, yet designers are often brought in after those choices have already been made.

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    There is an opportunity and a need for design thinking and "design doing" to move further upstream, and that starts with speaking the language of the people making those decisions: finances and margins.

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    Questions to ask:

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    • What does this insight or design mean for productivity, adoption, risk, growth, for the people working inside the system and for the people affected by it?
    • What would this save, generate, or protect, in dollars, time, or risk?
    • Can we connect the human story to a number?
    • How can I socialize this upwards in my organization?

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    Business decisions are design decisions.

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    Designing for what comes next

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    The next era of design is expanding what we consider when we design.

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    As systems become more autonomous, designers have an opportunity to shape not only experiences, but the policies, services, and the systems around them.

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    The future of design is less about finding the right framework and more about what we choose to do with what we know.

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    Our monthly newsletter, User Tested is for product, design, and research teams who want to make UX research a strategic accelerator.  Subscribe to User Tested.

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    Anatomy of a Website Footer: Key Elements, UX Best Practices, and Examples

    Definition of a website footer

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    The footer of a website sits at the very bottom of every single web page and contains links to various types of content on your website. It’s an often overlooked component of a website, but it plays several important roles in your information architecture (IA) – it’s not just some extra thing that gets plonked at the bottom of every page.

    Getting your website footer right matters!

    The footer communicates to your website visitors that they’ve reached the bottom of the page and it’s also a great place to position important content links that don’t belong anywhere else – within reason. A website footer is not a dumping ground for random content links that you couldn’t find a home for, however there are some content types that are conventionally accessed via the footer e.g., privacy policies and copyright information just to name a few.

    Lastly, from a usability and navigation perspective, website footers can serve as a bit of a safety net for lost website visitors. Users might be scrolling and scrolling trying to find something and the footer might be what catches them and guides them back to safety before they give up on your website and go elsewhere. Footers are a functional and important part of your overall IA, but also have their own architecture too.

    Read on to learn about the types of content links that might be found in a footer, see some real life examples and discuss some approaches that you might take when testing your footer to ensure that your website is supporting your visitors from top to bottom.

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    What belongs in a website footer

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    Deciding which content links belong in your footer depends entirely on your website. The type of footer, its intent and content depends on its audience of your customers, potential customers and more — ie your website visitors. Every website is different, but here’s a list of links to content types that might typically be found in a footer.

    • Legal content that may include: Copyright information, disclaimer, privacy policy, terms or use or terms of service – always seek appropriate advice on legal content and where to place it!
    • Your site map
    • Contact details including social media links and live chat or chat bot access
    • Customer service content that may include: shipping and delivery details, order tracking, returns, size guides, pricing if you’re a service and product recall information.
    • Website accessibility details and ways to provide feedback 
    • ‘About Us’ type content that may include: company history, team or leadership team details, the careers page and more 
    • Key navigational links that also appear in the main navigation menu that is presented to website visitors when they first land on the page (e.g. at the top or the side)

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    Website footer examples

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    Let’s take a look at three diverse real life examples of website footers.

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    IKEA US
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    IKEA’s US website has an interesting double barrelled footer that is also large and complex – a ‘fat footer’ as it’s often called – and its structure changes as you travel deeper into the IA. The below image taken from the IKEA US home page shows two clear blocks of text separated by a blue horizontal line. Above the line we have the heading of ‘All Departments’ with four columns showing product categories and below the line there are seven clear groups of content links covering a broad range of topics including customer service information, links that appear in the top navigation menu and careers. At the very bottom of the footer there are social media links and the copyright information for the website.
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    An image of IKEA US home page footer on their website, from 2019.
    IKEA US home page footer (accessed May 2019)

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    As expected, IKEA’s overall website IA is quite large, and as a website visitor clicks deeper into the IA, the footer starts to change. On the product category landing pages, the footer is mostly the same but with a new addition of some handy breadcrumbs to aid navigation (see below image).
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    An image of IKEA US product page footer on their website, from 2019.
    IKEA US website footer as it appears on the product category landing page for Textiles & Rugs (accessed May 2019).

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    When a website visitor travels all the way down to the individual product page level, the footer changes again. In the below image found on the product page for a bath mat, while the blue line and everything below it is still there, the ‘All Departments’ section of the footer has been removed and replaced with non-clickable text on the left hand side that reads as ‘More Bath mats’ and a link on the right hand side that says ‘Go to Bath mats’. Clicking on that link takes the website visitor back to the page above.
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    IKEA US website footer as it appears on the product page for a bath mat, from 2019.
    IKEA US website footer as it appears on the product page for a bath mat (accessed May 2019).

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    Overall, evolving the footer content as the website visitor progresses deeper into the IA is an interesting approach - as the main page content becomes more focussed as does the footer while still maintaining multiple supportive safety net features.

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    M.A.C Cosmetics US
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    The footer for the US website of this well known cosmetics brand has a four part footer. At first it appears to just have three parts as shown in the image below: a wide section with seven content link categories covering a broad range of content types as the main part with a narrow black strip on either end of it making up the second and third parts. The strip above has loyalty program and live chat links and the strip below contains mostly links to legal content.
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    MAC Cosmetics US website footer with three parts as it appears on the home page upon first glance, from 2019.
    MAC Cosmetics US website footer with three parts as it appears on the home page upon first glance (accessed May 2019).


    When a website visitor hovers over the ‘Join our loyalty program’ call to action (CTA) in that top narrow strip, the hidden fourth part of the footer which is slightly translucent pulls up like a drawer and sits directly above the strip capping off the top of the main section (as shown in the below image). This section contains more information about the loyalty program and contains further CTAs to join or sign in. It disappears when the cursor is moved away from the hover CTA or it can be collapsed manually via the arrow in the top right hand corner of this fourth part. It’s an interesting and unexpected interaction to have with a footer, but it adds to the overall consistent and cohesive experience of this website because it feels like the footer is an active participant in that experience.
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    MAC Cosmetics US website footer as it appears on the home page with all four parts visible, from 2019.

    MAC Cosmetics US website footer as it appears on the home page with all four parts visible (accessed May 2019).

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    Domino’s Pizza US
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    Domino’s Pizza’s US website has a reasonably flat footer in terms of architecture but it occupies as much space as a more complex or deeper footer. As shown in the image below, its content links are presented horizontally over three rows on the left hand side of the footer and these links are visually separated by forward slashes. It also displays social media links and some advertising content on the right hand side. The most interesting feature of this footer is the large paragraph of text titled ‘Legal Stuff’ below the links. Delightfully it uses direct, clear and plain language and even includes a note about delivery charges not including tips and to ‘Please reward your driver for awesomeness’.
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    Domino’s Pizza US website footer as it appears on the home page, from 2019.

    Domino’s Pizza US website footer as it appears on the home page (accessed May 2019).

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    How to test a website footer

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    Like every other part of your website, the only way you’re going to know if your footer is supporting your website visitors is if you test it with them. When testing a website’s IA overall, the footer is often excluded. This might be because we want to focus on other areas first or maybe it’s because testing everything at once has the potential to be overwhelming for our research participants.
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    Testing a footer is fairly easy thing to do and there’s no right or wrong approach – it really does depend on where you are up to in your project, the resources you have available to you and the size and complexity of the footer itself!
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    If you’re designing a footer for a new website there’s a few ways you might approach ensuring your footer is best supporting your website visitors. If you’re planning to include a large and complex footer, it’s a good idea to start by running an open card sort just on those footer links. An open card sort will help you understand how your website visitors expect those content links in your footer to be grouped and what they think those groups should be called.
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    If you’re redesigning an existing website, you might first run a tree test on the existing footer to benchmark test it and to pinpoint the exact issues. You might tree test just the footer in the study or you might test the whole website including the footer. Optimal's tree testing is really flexible and you can tree test just a small section of an IA or you can do the whole thing in one go to find out where people are getting lost in the structure. Your approach will depend on your project and what you already know so far. If you suspect there may be issues with the website’s footer, for example, if no one is visiting it and/or you’ve been receiving customer service requests from visitors to help them find content that only lives in the footer,  it would be a good idea to consider isolating it for testing. This will help you avoid any competition between the footer and the rest of your IA as well as any potential confusion that may arise from duplicated tree branches (i.e. when your footer contains duplicate labels).
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    If you’re short on time and there aren’t any known issues with the footer prior to a redesign, you might tree test the entire IA in your benchmark study, iterate your design and then along with everything else, include testing activities for your footer in your moderated usability testing plan. You might include a usability testing scenario or question that requires your participants to complete a task that involves finding content that can only be found in the footer (e.g., shipping information if it’s an ecommerce website). Also keep a close eye on how your participants are moving around the page in general and see if/when the footer comes into play – is it helping people when they’re lost and scrolling? Or is it going unnoticed? If so, why and so on. Talk to your research participants like you would about any other aspect of your website to find out what’s going on there. When resources are tight, use your best judgement and choose the research approach that’s best for your situation, we’ve all had moments where we’ve had to be pragmatic and do our best with what we have.
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    When you’re at a stage in your design process where you have a visual design or concept for your footer, you could also run a first-click test. First-click tests are quick and easy and will help you determine how your website visitors are faring once they reach your footer and if they can identify the correct content link to complete their task. Studies can be run remotely or in person and just like the rest of the tools in Optimal's user research platform, are super quick to run and great for reaching website visitors all over the world simply by sharing a link to the study.

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    What Our AI Interviewer Taught Us About Conversational AI

    AI-moderated interviews are moving from experiment to everyday workflow. But for anyone who cares about user experience, the real question isn’t whether an AI can ask good questions. It’s whether the person on the other side wants to answer them. And that comes down to the design more than the model.

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    People are more comfortable talking to AI than you might expect. In an Adobe Express survey of 1,005 US consumers, 61% said they were comfortable having conversations with AI-powered systems. A COPC study across six countries found people who knew they were talking to AI reported 34% higher satisfaction than those who weren’t told.

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    But a quick chat with a bot isn’t a research interview. So we put it to the test. We ran a study using Optimal’s AI Interviewer with participants at different levels of AI and UX experience, including some who were skeptical going in (and rightfully so!). Because if an AI interview only works for people who already love AI, it doesn’t really work.

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    What participants told us

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    Most participants described the experience as seamless, smooth, natural and even fun, including several who had reservations going in. Three things stood out.

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    1. It felt like a conversation, not a script

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    Participants noticed that follow-ups were built on what they had just said. One put it simply:

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    “I really felt like I was talking to a real person.”

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    Another appreciated that the AI summarised their points before moving on, instead of asking the same question in different ways. That was a frustration they’d had with other AI interview tools.

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    2. Less pressure made it easier to open up

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    Several participants found the AI easier to talk to than a live interviewer. Without a person across the table, there was less pressure to perform.

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    “I have no problems speaking freely.”

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    On-screen text alongside the spoken conversation also mattered. One participant with auditory processing difficulties called it out as a genuinely useful accessibility feature.

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    Not everyone was fully won over. One participant felt a human would better grasp the emotion behind their answers, though they still rated the experience positively.

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    3. Choice built confidence

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    Participants could pick how the conversation flowed. One chose “submit response” mode, deciding when each answer was finished. After a good first experience, they said they’d be happy to try “free form” mode next, where the AI responds naturally once they stop speaking.

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    Want to hear it from participants directly?
    ‍Watch the highlight reels in our full study write-up →

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    What designers can take from this

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    The takeaway reaches well beyond research tools: whether an AI conversation works depends less on the model and more on the experience designed around it. If you’re designing any conversational AI, these are worth stealing.

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    • Prove you’re listening. Responses that reference the user’s own words build trust faster than clever phrasing. A short summary before moving on signals “I heard you.”
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    • Don’t make people repeat themselves. Rephrasing the same question feels robotic. Move the conversation forward instead.
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    • Lower the stakes. Removing social pressure can make people more candid. Clear instructions and a predictable flow help them settle in.
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    • Offer more than one channel. Pairing voice with on-screen text supports people who process information differently, and makes the experience easier for everyone.
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    • Give users control over pacing. Letting people choose when to submit, or when to go free form, turns uncertainty into confidence.
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    • Be honest about limits. Some people will still prefer a human for emotionally nuanced topics. Design AI as an option, not the only path.

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    See how Optimal’s AI Interviewer works

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    We built these lessons into Optimal’s AI Interviewer, an AI-moderated research tool designed to work with you, not instead of you. It helps teams run more interviews without losing the depth that makes qualitative research valuable.

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    1. Add your context. Research goals, audience details and supporting material guide every follow-up.
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    2. Build your discussion guide. Set sections, questions, goals and how deeply the AI should probe.
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    3. Let it run the interview. The AI listens, adapts and explores relevant threads while staying on your goals.
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    4. Get cited insights. An AI-generated summary and key themes, with citations at study, section and question level, plus highlight reels that jump to the moment behind each insight.

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    Take this two-minute interactive tour to see it for yourself.

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    The bottom line

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    AI interviews aren’t about replacing the human side of research. They give teams another way to listen, at a scale that used to need a lot more people and time. And when the experience is designed well, participants are happy to talk.

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    Optimal’s AI Interviewer is now in Early Access, book a demo to learn more.

    Header graphic for the article 'Addressing AI Bias in UX: How to Build Fairer Digital...'
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    Addressing AI Bias in UX: How to Build Fairer Digital Experiences

    The Growing Challenge of AI Bias in Digital Products

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    AI is rapidly reshaping our digital landscape, powering everything from recommendation engines to automated customer service and content creation tools. But as these technologies become more widespread, we're facing a significant challenge: AI bias. When AI systems are trained on biased data, they end up reinforcing stereotypes, excluding marginalized groups, and creating inequitable digital experiences that harm both users and businesses.

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    This isn't just theoretical, we're seeing real-world consequences. Biased AI has led to resume screening tools that favor male candidates, facial recognition systems that perform poorly on darker skin tones, and language models that perpetuate harmful stereotypes. As AI becomes more deeply integrated into our digital experiences, addressing these biases isn't just an ethical imperative t's essential for creating products that truly work for everyone.

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    Why Does AI Bias Matter for UX?

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    For those of us in UX and product teams, AI bias isn't just an ethical issue it directly impacts usability, adoption, and trust. Research has shown that biased AI can result in discriminatory hiring algorithms, skewed facial recognition software, and search engines that reinforce societal prejudices (Buolamwini & Gebru, 2018).

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    When AI is applied to UX, these biases show up in several ways:

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    • Navigation structures that favor certain user behaviors
    • Chatbots that struggle to recognize diverse dialects or cultural expressions
    • Recommendation engines that create "filter bubbles" 
    • Personalization algorithms that make incorrect assumptions 

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    These biases create real barriers that exclude users, diminish trust, and ultimately limit how effective our products can be. A 2022 study by the Pew Research Center found that 63% of Americans are concerned about algorithmic decision-making, with those concerns highest among groups that have historically faced discrimination.

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    The Root Causes of AI Bias

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    To tackle AI bias effectively, we need to understand where it comes from:

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    1. Biased Training Data

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    AI models learn from the data we feed them. If that data reflects historical inequities or lacks diversity, the AI will inevitably perpetuate these patterns. Think about a language model trained primarily on text written by and about men,  it's going to struggle to represent women's experiences accurately.

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    2. Lack of Diversity in Development Teams

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    When our AI and product teams lack diversity, blind spots naturally emerge. Teams that are homogeneous in background, experience, and perspective are simply less likely to spot potential biases or consider the needs of users unlike themselves.

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    3. Insufficient Testing Across Diverse User Groups

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    Without thorough testing across diverse populations, biases often go undetected until after launch when the damage to trust and user experience has already occurred.

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    How UX Research Can Mitigate AI Bias

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    At Optimal, we believe that continuous, human-centered research is key to designing fair and inclusive AI-driven experiences. Good UX research helps ensure AI-driven products remain unbiased and effective by:

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    Ensuring Diverse Representation

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    Conducting usability tests with participants from varied backgrounds helps prevent exclusionary patterns. This means:

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    • Recruiting research participants who truly reflect the full diversity of your user base
    • Paying special attention to traditionally underrepresented groups
    • Creating safe spaces where participants feel comfortable sharing their authentic experiences
    • Analyzing results with an intersectional lens, looking at how different aspects of identity affect user experiences
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    Establishing Bias Monitoring Systems

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    Product owners can create ongoing monitoring systems to detect bias:

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    • Develop dashboards that track key metrics broken down by user demographics
    • Schedule regular bias audits of AI-powered features
    • Set clear thresholds for when disparities require intervention
    • Make it easy for users to report perceived bias through simple feedback mechanisms
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    Advocating for Ethical AI Practices

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    Product owners are in a unique position to advocate for ethical AI development:

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    • Push for transparency in how AI makes decisions that affect users
    • Champion features that help users understand AI recommendations
    • Work with data scientists to develop success metrics that consider equity, not just efficiency
    • Promote inclusive design principles throughout the entire product development lifecycle
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    The Future of AI and Inclusive UX

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    As AI becomes more sophisticated and pervasive, the role of customer insight and UX in ensuring fairness will only grow in importance. By combining AI's efficiency with human insight, we can ensure that AI-driven products are not just smart but also fair, accessible, and truly user-friendly for everyone. The question isn't whether we can afford to invest in this work, it's whether we can afford not to.

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    Seeing is believing

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