How can automatic processing be estimated in an editing task? Is there a way of measuring/estimating the amount of controlled vs. automatic processes that takes place during a text editing task?

I know that asking participants to verbalise their actions and regard non-verbalised processes as automatic is a flawed approach. I came across the process-dissociation procedure, but this seems to refer to automatic/unconscious recollection after a learning task has taken place, and not automatic processes during the task itself.

Any suggestions of references or ideas on how to go about this?
What do you mean exactly with 'processes'? If you're thinking about actual movements made during editing (i.e. tiping), this science paper might help. Very simply put, they showed skilled typist have two kinds of control processes, one conscious and one unconscious.  

(Science 29 October 2010: 
Vol. 330 no. 6004 pp. 683-686 
DOI: 10.1126/science.1190483)