Using a proto-persona for UX design - LogRocket Blog
Briefly

User personas are essential in UX design, helping prioritize user pain points. Proto-personas differ, being primarily based on assumptions rather than validated research.
Proto-personas resemble traditional user personas but are built from assumptions and beliefs. They lack the research backing that informs a standard user persona.
Creating user-centric designs requires understanding specific users. While proto-personas help visualize user segments, they can lead designers astray without proper validation.
While proto-personas are less reliable, they can help kickstart conversations about user needs, making them useful in initial stages of design processes.
Read at LogRocket Blog
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