Confirmation bias

Another (biased) data-point feeding into my extreme suspicions and
distaste for the field of psychology as it is practiced by the
majority of half-assed practitioners ... it is by far one of the
biggest frauds of the modern era in medicine.

http://www.nytimes.com/2012/02/01/opinion/i-had-asperger-syndrome-briefly.html?src=me&ref=general