According to Wikipedia, Cognitive Style is defined as this:
Cognitive style or "thinking style" is a term used in cognitive psychology to describe the way individuals think, perceive and remember information. Cognitive style differs from cognitive ability (or level), the latter being measured by aptitude tests or so-called intelligence tests.
Controversy exists over the exact meaning of the term cognitive style and also as to whether it is a single or multiple dimension of human personality. However, it remains a key concept in the areas of education and management.
If a pupil has a cognitive style that is similar to that of his/her teacher, the chances that the pupil will have a more positive learning experience are improved. Likewise, team members with similar cognitive styles likely feel more positive about their participation with the team.
While matching cognitive styles may make participants feel more comfortable when working with one another, this alone cannot guarantee the success of the outcome.
From this definition, it could possibly be transferred to personas if you have a target audience meeting certain cognitive styles. But would it be beneficiary or even wanted? There are a few problems, such as determining the cognitive style of a user. This cannot be easily accomplished and probably would require a lot of testing of the users first.
Still, I find it interesting, and if one could determine cognitive style would it be possible to add these attributes to personas?