Usability Testing and User Research Questions

Focuses on planning, designing, conducting, and analyzing usability studies and broader user research to surface user needs, pain points, and behavior. Candidates should know how to define research goals and questions, design tasks, recruit representative participants, choose between formative and summative approaches and moderated and unmoderated sessions, and select appropriate test formats such as in home, lab, or remote testing. Includes facilitation techniques, observation and note taking, qualitative and quantitative analysis, synthesis of findings into actionable design recommendations, and how to cite user quotes or data to support product decisions.

MediumTechnical

67 practiced

For an early prototype of a new checkout flow, describe how you decide whether to test a low-fidelity clickable prototype or a high-fidelity interactive prototype. Consider research goals, what you need to learn about interactions and visuals, resource constraints, and validity of the findings.

EasyTechnical

59 practiced

What is a reasonable minimum sample size for early-stage qualitative usability testing, and why? Discuss trade-offs between speed, discovery of problems, saturation, and diminishing returns, and give guidance on when to recruit more participants.

HardTechnical

69 practiced

Plan a usability test specifically for users with motor impairments for an app that relies on fine touch gestures. Include recruitment criteria and channels, consent and accommodations, task design and alternative interaction methods, instrumentation to measure motor effort (e.g., error counts, touch precision), and how you'd write developer-facing recommendations.

HardSystem Design

56 practiced

Design an operational plan that coordinates A/B testing (experiments) with qualitative usability testing to validate UI changes before full rollout. Include timelines, responsibilities (product, engineering, research), gating criteria for rollout, instrumentation and metric definitions, and steps to avoid confounding effects across studies.

EasyTechnical

51 practiced

Explain the think-aloud protocol: define it, list when it's most useful in usability research, describe benefits and limitations, and explain how you would encourage participants to verbalize their thoughts without leading or biasing them.

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