Hi Peter – I don’t know if I am too late coming to this, but I think I have reason for this apparent “failure” of psychology to emulate the scientific method. Wittgenstein wrote about it 70 years ago – see comment 371 at the end of the Investigations – where he says “problem and method pass one another by”. That it because psychology is more like mathematics than physics. The argument from maths is the number of statements which might or might not be provable is unlimited. In any large sample of papers by mathematicians the number of true statements far outweigh the number of untrue. If this was merely random you’d expect the opposite. Mathematicians seldom try to prove something unless they are convinced before hand of its truth. This is because mathematics is uncovering intuitive truths. Wittgenstein highlighted that this is the case in psychology too; and it should stop comparing itself with physics (physics envy) and start comparing itself with maths. Then we would be on the way to finding out our human nature; revealing it as it lies buried in cultural clutter. I really wish they would actually notify me via e-mail if any one follows up on this.