A  FIRST  EXPERIMENT

35

Correlations

Tests

Inspectors

Gaugers

Card  sorting

55

•OS

lapping

14

•52

Cancellation

63

•  17

General  intelligence

14

.18

Number  group  checking

72

-.19

It  so  happens  that  the  very  test  which  shows  the  highest
correlation  among  inspectors  shows  the  lowest  correlation,
a  minus  correlation,  in  fact,  among  the  gaugers.  This  is
quite  in  accord  with  the  apparent  fact  that  for  the  work
°f  inspection  visual  discrimination  is  probably  the  quality
least  necessary.  An  interesting  fact  was  the  absence  of
correlation  between  the  test  for  intelligence  involving  the
ability  to  read  and  follow  easy  directions,  and  the  work
°f  both  inspecting  and  gauging.  This  indicated  that  intelligence ­
  of  this  kind  was  not  necessary  for  success  at
such  work  and  this,  so  far  as  ordinary  observation  could
tell,  was  quite  true.  The  only  test  which  shows  a  significant ­
  correlation  among  gaugers  is  the  tapping  test.
ms  seems  reasonable  since,  in  both  the  test  and  the  operation ­
  of  gauging,  speed  of  movement  and  endurance  are
the  chief  factors.  The  significance  of  this  part  of  the
experiment  is  therefore  chiefly  negative  since  it  serves
to  bring  out  the  fact  that  girls  who,  to  the  ordinary  observer ­
  and  even  to  the  trained  employment  manager,  look
Ver y  much  alike  may  still  possess  very  different  sets  of
qualifications.  If  all  the  gaugers  and  inspectors  had  been
ln ed  up  before  the  employment  window,  it  is  highly  im-P
 r obable  that  the  employment  manager  would  have  been
^ule  by  mere  observation  to  make  the  radical  division
etween  the  applicants  which  the  tests  would  have  enabled
lm  to  make.