Scientific Research
In empirical results, the research to date has offered soft metrics for the success of personas, such as anecdotal feedback from stakeholders. Rönkkö (2005) has described how team politics and other organizational issues led to limitations of the personas method in one set of projects. Chapman, Love, Milham, Elrif, and Alford (2008) have demonstrated with survey data that descriptions with more than a few attributes (e.g., such as a persona) are likely to describe very few if any real people. They argued that personas cannot be assumed to be descriptive of actual customers.
A study conducted by Long (2009) claimed support for Cooper, Pruitt et al. in the use of personas. In a partially controlled study, a group of students were asked to solve a design brief; two groups used personas while one group did not. The students who used personas were awarded higher course evaluations that the group who did not. Students who used personas were assessed as having produced designs with better usability attributes than students who did not use personas. The study also suggests that using personas may improve communication between design teams and facilitate user-focused design discussion. The study had several limitations: outcomes were assessed by a professor and students who were not blind to the hypothesis, students were assigned to groups in non-random fashion, there was no replication or sampling (overall sample size is an N=1 single trial), and there was no control of other contributing factors or expectation effects (e.g., the Hawthorne effect or Pygmalion effect).
Read more about this topic: Persona (marketing)
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