Yet another article on the propensity of forensic experts to show bias:

"Forensic psychologists and psychiatrists are ethically bound to be impartial, to look only at the evidence before them, when performing evaluations or providing expert opinions in court. But new research suggests that the paycheck some courtroom experts receive influences their evaluations:

http://www.futurity.org/society-culture/impartial-experts-not-so-impartial/? "

The plethora of papers and articles dealing with this matter seems to suggest that it is a problem of epidemic proportions - which as far as I can see, it most definitely is not.