Classical ensembles do not enter. But the strict quantum description is retained throughout. Clearly a conscious intelligence formulates the question. I give the basic ideas for how this is done in the paper in question. Besides tests one must consider explanatory power.
Explanatory power requires getting out more than was put in.
The input to my theory is von Neumann quantum theory. This is an exceedingly elegant and parsimonious theory that is able to explain all the predictions of classical and quantum physics. The basic equations were given by von Neumann already in 1932. I add the theoretically well understood, and experimentally demonstrated, quantum Zeno effect, and automatically obtain just the restricted sort of influence of mind on matter that Wm. Thus the predicted effect of mind on brain is a direct consequence of basic precepts of quantum theory laid down long ago.