I'm not sure if this will help, but I am bi-lingual and was very creative. I sustained a mild brain injury (to my frontal lobe and secondarily to my occipital lobe. I lost much of my creativity, but not my bilingual abilities. So I would propose that being bilingual does not strengthen or increase creativity.
This is a challenging question, because you need to know why bilingualism has such widespread benefits, and whether these benefits also feed creativity. In my view, bilingualism strengthens general control strategies, because it requires a mental state representation of what the current language is. Flexible handling mental states is also beneficial in many task involving proactive cognitive control, typically tested with psychological tasks like Stroop, Task-Switching, and various complex working memory tasks. In everyday practice, proactive control is useful in planning future actions, and anticipating outcomes of actions.
So, will this play a role in creativity? My hunch is that is does, to some extent. Maybe when it comes to the "spark of inspiration", but definitely in doing something productive with that spark, or evaluating it.
Unfortunately, i don't know how the creative process works and if the fact to control the different tasks i'm doing and the different languages i'm using can increase the creative potential and for which situations in particular. The fact to link different cultures and languages could allow to explore new fields. Of course, it doesn't mean that the result will be automatically more creative that other more traditional routes.
I and my fellow PSYART editors read and publish articles about the application of psychology to the arts. As editors, we may occasionally take the liberty of airing our own opinions in these even airier electronic pages. It is in that spirit that I offer this rather speculative piece.
--Norman N. Holland
see their link: http://www.psyartjournal.com/article/show/n_holland-the_neurosciences_and_the_arts
In short, No. Making assertions about brain flexibility seems like you are talking about some sort of general cognitive capacity that may be expanded by learning additional languages. Although this is a popular idea, the research is usually poor and there is not much support for this.
I think brain flexibility, used by Jamie, is a reification. I do not believe experts in neurology consider brain flexibility to be a measurable substance.
Whoops, I mean to say--not measurable in terms of any single variable or prominently grouped variables treated as a single identity. In other words, we talk about intelligence nowadays as multiple--not a single entity derived from a single flexible source--somewhere in the head or brain. We also would find "brain flexibility" to be talked about as a multiple event of some variants.
I have read and enjoyed the articular from MIT above. However, I am not certain that the title, which focuses on the term flexibility applies as much as "multi-tasking" by certain neurons.
The multiplyer effect of these mutl-tasking neurons is fascinating and related to the concept that "learning" can be unlimited.
On a lighter note, please check this video and let me ask what thoughts run through your brain? senses? memory? language and cross-cultural experiences?