Spontaneity as object of investigation in the cognitive sciences What are known studies, experiments, thoughts and literature on spontaneity? I am looking for anything relating to questions like "What does it mean for someone to be spontaneous?" or "What factors are involved in being spontaneous?" or anything else.

EDIT: aspects of creativity, improvisation in the arts are not meant, but spontaneity in the way of life or in daily behavior. Excuse being unprecise.

I appreciate any hints.
These should get you started, relating to spontaneous behaviour of humans in society, in contrast to normality behaviour:


Spontaneous Alternation Behavior by W.N. Dember, C.L. Richman
How does complex behavior spontaneously emerge in the brain? - Lisa Zyga
Brain modularity controls the critical behavior of spontaneous activity - R. Russo, H. J. Herrmann  &amp; L. de Arcangelis
The Wisdom of Spontaneity (Part 1) - Leon F Seltzer Ph.D
Identification of spontaneous and deliberate behavior - Vernon L. Allen, Michael L. Atkinson
Some factors influencing spontaneous alternation in human subjects - Wingfield, R. C.