APPENDIX

409

Description:  See  sample  test.
Instructions:  “On  the  other  side  of  this  sheet  (pointing  to  test
sheet)  you  will  find  some  simple  arithmetic  examples  in
addition,  subtraction,  multiplication,  and  division.  Be
sure  to  notice  all  decimal  points.  Go  down  each  column
doing  each  example  quickly  and  accurately.  All  right?
Start.”  Allow  300  seconds  as  a  maximum  time.
Corrections:  A  key  with  the  correct  answers  should  be  in  readiness. ­
  Examples  have  the  following  values:  addition,  1  each;
subtraction,  1;  decimal  point  wrong  or  omitted,  1;  multiplication ­
  and  division,  5  if  the  decimal  point  is  right,  6  if  it
is  wrong.  Total  value  of  test,  64  units.
Record:  Number  of  seconds  taken,  number  of  possible  points
(64),  minus  number  of  points  lost.  E.  g.,  10;  250  secs.,
64  -  8.
Rating:  Apply  formula  II.  Point  of  reference,  the  perfect
completion  of  64  units  in  240  seconds.  RU,  64,  total  number ­
  of  reference  units  in  test;  Ru,  reference  time  per  unit
which  is  240  -f-  64  or  3.75;  E,  errors  or  omissions;  T,  time
.  .  .  ,  ,  RuXRU-E
taken.  Applying  formula  =  =  r  to  sample

record  above  we  have,

3-75  X  (64  -  8)
250

=  .84

12.  Card  Sorting  (complex)

Description:  (1)  50  cards,  2”  X  3"  X  .03”,  stiff  cardboard,  with
seven  black  letters  posted  promiscuously  on  each  one.  The
cards  are  numbered  and  marked  on  the  back  so  that  the
examiner  can  sort  them  after  every  trial  into  their  exact
original  order  and  at  the  same  time  count  all  mistakes.
(2)  A  sample  set  of  eight  cards,  for  preliminary  trial.  (3)
A  plain  square  cardboard,  12”  X  12”,  with  X  —  K  printed
in  one  corner,  X  —  Y  in  another,  5  —  6  in  the  third,  and
others  in  the  fourth.
Instructions:  Place  the  cardboard  in  front  of  subject.  “I  wish