Based upon...?
If you are talking about how this test was derived, openness, imaginative and abstract all come from the "FFM" equivalent grouping of "Openness", verbatim. MBTI doesn't measure openness directly - at least, not as a sub-factor... but the correlation is to N long before P (~.65 to .30 give or take a bit depending on the study).
Sorry if I sounded like a smart ass back there -- wasn't my intention.
I thought that Openness is more related to willingness to learn about abstract ideas.
My openness is more of an intellectual sort. My interests are definitely more abstract than practical.
But when trying new foods and physical things like that, I'm more cautious. It's not that I don't want to try the food, but it's the possibility that I may not like it, especially if I'm the one paying for it. On the other hand, if it's at an all-you-can-eat buffet, I'm extremely open.
And another thing, where do you draw the line between the arts and entertainment? I'm extremely interested in movies, and I really don't see them as any less of an art form than painting. And I also do thorough research in films and watch them for intellectual and creative inspiration, while the entertainment is usually secondary.
I suppose I'm thinking that Openness in FFM refers more to intellectual openness rather than experiential openness. Because the way I see it, it seems that SPs are also open to new experiences.