Professional Development Question - Business vs. Psychology

This may sound like an odd question, but I am trying to articulate the
different ways that psychology can relate to the field of information
security.  

I've recently switched from an MBA program to an MA in Clinical Psychology
program.  In a couple of recent job interviews I've been told that it was
probably a career mistake to do so.  I certainly don't agree, but my own
arguments are apparently pretty weak in this area.  

Any help in strengthening my argument would be greatly appreciated.