For the ten years prior to April 2, 2013, it was possible to pass the patent bar exam (100 question multiple choice exam) primarily by memorizing old test questions and answers from 1999 to 2003 made available by the U.S. Patent & Trademark Office (USPTO).
Interdisciplinary communication is a problem. Neuroscientists and clinical scientists meet infrequently, rarely work together, read different journals, and know relatively little of each other's needs and discoveries. This culture gap in the field of mental health has widened as brain science has exploded.
Of course, there are certainly hard scientists that would agree with me that psychology is a science, but I'm guessing those folks would be in the minority. And I also think that the idea that psychology is not quite a science is in fact a common belief among the public, not just among the hard sciences elite. I tried to find some thoughts that might give insight into why hard scientists hold the view that social science just isn't up to par.