UX Research & Usability Testing Interview Questions (UI / UX Design)
10 UX Research & Usability Testing questions from the UI / UX Design track. Read each short answer here, then open a question for the full explanation, examples, common mistakes, and sources.
- Junior
What is the fundamental difference between qualitative and quantitative research in user experience?
Qualitative research answers "why" and "how" users think and interprets their feelings and motivations, while quantitative research answers "how many" and "what" through statistical data and percentages.
Read the full explanation - Mid-level
How do you design and conduct user interviews while avoiding leading questions?
Ask open-ended questions focused on users' actual past behaviors and experiences rather than opinions or predictions, and do not include the expected answer in the question.
Read the full explanation - Junior
What is the Think-Aloud Protocol in usability testing, and what is its purpose?
It asks users to say aloud their thoughts, feelings, and expectations as they perform specific tasks on a prototype.
Read the full explanation - Mid-level
Compare user Personas with the Jobs to Be Done (JTBD) framework.
Personas focus on a user's identity and demographic and psychological traits, while JTBD focuses on the context, goal, and functional and emotional task the user wants to accomplish, regardless of identity.
Read the full explanation - Mid-level
What is the difference between open and closed card sorting?
Open card sorting lets users group topics and name the groups themselves. Closed card sorting asks them to place topics into predefined categories.
Read the full explanation - Mid-level
What is Tree Testing, and why is it known as reverse information architecture?
It measures information findability through a plain text tree structure without visual or graphic interface elements.
Read the full explanation - Junior
What are Nielsen's 10 Usability Heuristics, and why are they important?
They are standard guidelines for evaluating user interfaces and finding common usability issues without immediately testing with users.
Read the full explanation - Mid-level
What is the difference between a Customer Journey Map and a User Flow diagram?
A Journey Map documents the overall experience, emotions, and pain points across multiple touchpoints and a long period of time, while a User Flow maps the technical steps and screens inside the system to complete a specific task.
Read the full explanation - Senior
What is Contextual Inquiry, and how does it reveal users' latent needs?
It is an ethnographic research method in which a researcher observes and interviews users in their natural, real working environment while they perform their usual tasks.
Read the full explanation - Senior
How do you analyze unstructured qualitative data and derive actionable insights with Affinity Diagrams?
Put notes and quotes on individual cards, then group them bottom-up by relationships and shared patterns to form major themes and insights.
Read the full explanation