WHITE RAT AND THE MULTIPLE CHOICE METHOD 241 



8 CO CO CO Q 



CO CO tO C 



CO CO CO* lo' *# 



XXO ^f MN 00 CO 00 O CO 



Lot>^fLqo6t> loo^x tbioo -*tox^*x -*xox t> 



(Ot* 10 . ^ to LO td X ^ ""*• t> X X tO lO X rj« LO ■* C- t> O LO tO ^ M* O 00 



• • CO ■* . • • ■ to LO • ... 



tj< lo oo lcj oo co lOLO^^to "*xroo to ■<* lo to lo lo oc co to ^r lo lo oo co 



lo to ^ ^r to ^ COCO^tb^ 1 CO co to t> CO LO CO ^f" CO to LO ■* CO LO to to to •* 



