The lateral connection of events is too complex to be traced. And such processing must accompany all mental events. This is sometimes called 'top-down processing'. Because of the interpersonal communication possible in human groups, causes themselves become cultural. This learning most often does not have enough time to become biologically encoded so it semiotically encoded instead.
Events still have causes, of course, but they are no longer merely bio-physical.
So it may be sensible to say that human cultural systems have 'more' freedom than other organic systems. But the crux of the question is the posited free-will of the individual. In fact, an archetypal potential's interpretation in human creative actions is subject to wide variation depending on the context of the individual who 'draws it forth' and actualizes it. In this way, human creative activity may be said to exemplify a high degree of free-will. I certainly have no idea.