Yes Freud was a great one for therapeutic practice, and very diligent. I would say that psychology is completely measurable - or at least the results of therapy are, which I guess is what your saying. Just because we cant physically cut it up and put it under a microscope, doesn't make a result any the less 'data', and if the data or result occurs each time, then you do have a measurable repeatable experiment. I suppose all the arguments come in when we try to interpret that data. Both freud, and Jung, could carry out the same experiment or therapy, exactly to the letter, but I'm sure each would interpret the data differently. Its no different in the hard sciences, such as Mathematics or Liquid dynamics - all will give you data to play with, what people make of that data is really what is in question, and even in these other sciences, there is always much dispute amongst the different institutes and organisations as to what the data represents. Psychology, is a branch of what we call the social sciences, we might argue its pro's, con's and method, but it is a science never the less - after all, science is the work and collection of data, its not the hypotheses that follows. Sorry that was a long reply Oo