Jared Spool fra User Interface Engineering opsummerer i en artikel tre fordele ved Personas som han ikke mener så ofte bliver diskuteret (min fremhævning) - og derefter anviser han hvad det kræves af personas for at opnå disse fordele;

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Personas don’t automatically get the benefits of preventing grounding, encouraging story telling, and enhancing role playing. They have to be carefully crafted to get those benefits.

To get the benefits, the personas have to have rich, relevant detail. They need to accurately represent the users the team is aiming for. And they need to have a solid foundation in the experiences of real users to be believable and meaningful.

Our research into the usage of personas has taught us that the most successful teams are those that are constantly feeding their persona information. They conduct frequent field studies to understand who the users are and what goals and motivations they have. The teams regularly use usability testing to expand their knowledge of their users. They think of their persona documents as living descriptions—constantly changing as they learn new things from their ongoing research, studies, and design exercises.

Personas are becoming a regular staple in many of the development teams we talk to. The method helps teams make a smooth transition between requirements and design, resulting with much cleaner designs. The benefits of preventing grounding, encouraging story telling, and enhancing role playing are rarely discussed, yet very present when you see the method in full force. It’s these benefits that guide our belief that personas will be a trusted method for many years to come.”