Here’s a very brief note about the concept of ‘usefulness’ regarding personas.
Usefulness of personas is tied to the (a) use case for which the persona is applied, which can be partially inherited from (b) domain (industry: e.g., in e-commerce some different persona information is needed than in journalism) and (c) job role (strategic / operational).
Therefore, dimensions for ‘usefulness’ in personas:
- use case
- industry
- job role
Should be considered when trying to understand / measure persona usefulness.
Jansen, B. J., Salminen, J., and Jung, S.G. (2020) Data-Driven Personas for Enhanced User Understanding: Combining Empathy with Rationality for Better Insights to Analytics. Data and Information Management. 4(1), 1-17.
https://content.sciendo.com/view/journals/dim/4/1/article-p1.xml