Skill · UX
Interaction Design
Designing how a product behaves in response to the people using it — the flows, states and controls that make it usable.
Interaction Design covers the structure of user flows, the design of controls and states, and the feedback that helps someone understand what a product is doing as they use it.
What you will be assessed on
A reviewer marks against these criteria. L1 is a free knowledge check; L2 and L3 use credits and a reviewer.
L1
Knows the principles of usable interaction design and can describe what a user flow and a state are.
L2
Has designed flows and screens for a live product, resolved edge cases, and iterated based on usability feedback.
L3
Defines the interaction model for a complex product, sets design patterns across surfaces, and governs consistency at scale.
Choose an assessment
Check your knowledge
Answer questions about this skill and see your result when you finish.
Free
Demonstrate your practical skills
Submit previous work or complete a Caterpi task. Then talk through your work and decisions with a reviewer.
1 credit · L2 work review
Demonstrate advanced judgement
Discuss unfamiliar scenarios with an expert reviewer and explain how you would handle constraints, uncertainty and trade-offs.
2 credits · L3 expert review
Available after an eligible L2 result in this skill.
What you need
A set of flows or prototypes for a live product, with the edge cases resolved and the reasoning behind key decisions.
Share only work you have permission to submit. Remove client or personal information that is not needed for the assessment.
Your result
Your result records the skill assessed, the assessment method, the date and the standard used. It appears in your Passport, and you can choose which records to share.
Roles that include this skill
This skill is not currently linked to a role guide. You can read its standard and view any available assessment routes.
Work on this skill
No learning resources are listed for this skill yet. Review the assessment criteria to plan what to practise.
Standards detail
Standard version: v1.0
Content version: 1.0.0
Next review: 2027-01-01
Reference: CAP-IXD-001