As far as I know, those studies all look at minor "decisions", such as pressing the left or the right button after a sound is heard. They find that they can predict which button will be pressed earlier than the conscious decision to pick one was experienced.
However, there is no actual "decision" to be made there. It's a random choice, and it's not that random choices are not conscious decisions.
It's much harder to devise an experiment that looks at actual, meaningful, decisions. And I'm not talking about something extreme like "do I love this person" or whatever, just a real decision, like the ones you might make in an RPG ("do I help or kill this NPC").