Bates of "Psycho" (6)
I believe the answer is:
norman
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">bates of psycho</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for norman that I've seen before include "Old invader" , "Australian golfer" , "Style of architecture" , "1066 invader" , "10th century French settler ..." .)