Apply interaction design (IxD) principles and frameworks to product and service design work. Use this skill when designing or evaluating interaction flows, micro-interactions, feedback mechanisms, affordances, mental models, component states, response time, animation and transitions, error recovery, input validation, task flows, or navigation patterns. Core audiences: product designers, UX designers, UI designers, service designers, and interaction designers working on digital products and services. Trigger on: interaction flow, micro-interaction, affordance, feedback design, state design (hover/focus/error/loading/empty), response time, transition, animation, mental model, task flow, user flow, navigation design, interaction spec, handoff annotation, gesture, input validation, error state, loading state, empty state, system feedback, signifier, design review, interaction audit, IxD principles.
2026-03-16