The  triple  test  for  determining  correct  posture  includes  a
standing  test,  a  marching  test,  and  an  exercise  test.
To  apply  the  standing  test,  the  teacher  judges  the  posture  of
each  pupil  (while  the  pupil  stands  in  profile)  by  the  use  of  the
vertical-line  test.  Pupils  who  fail  to  pass  this  test  take  their
seats.
To  apply  the  marching  test,  the  teacher  commands  the  pupils
who  passed  the  standing  test  to  march  round  the  room  a  few


16


Fig.  4.   Correct  sitting  posture.     Active  Fig.  5.  Correct  sitting  posture.     Resting

position.  position.
Fig.   6.   Improper  sitting  posture.
Fig.    7.   Improper  sitting   posture.
17

times.  Old  habits  of  faulty  posture  which  may  be  concealed
during  the  standing  test  will  assert  themselves  during  the  march-
ing test.     Pupils  exhibiting  these  faults  take  their  seats.
To  apply  the  exercise  test,  the  teacher  observes  the  pupils
who  passed  the  standing  test  and  the  marching  test  while  they
perform  a  few  exercises  in  which  movements  of  the  arms  in  the
upward  positions  are  emphasized.  If  a  pupil  has  assumed  an
unnatural  position  in  the  first  two  tests,  faulty  posture  will
appear  as  the  muscles  of  the  back  and  of  the  shoulders  tire  and
weaken.     Pupils  who  fail  to  pass  this  test  take  their  seats.
_       _    _  .,     ,     .  ,      ,  Fig.   9.  Improper  method  of  carrying  books.
Fig.  8.  Proper  method  of  carrying  books.  l_         .         <.      ,  ,

Carrying    books    under    one    arm    may,    in

time,  cause  lateral  curvature  of  the  spine.
