[ti:d]
[00:00.899]All  young  men  in  Norway
[00:02.622]must  take  a  test  of  their  cognitive  ability  at  age  nineteen
[00:07.557]in  preparation  for  required  military  service.
[00:10.862]This  is  commonly  called  an  IQ,or  intelligence  quotient  test
[00:16.842]The  researchers  compared  the  test  results  of  one  hundred  seven  thousand  young  men
[00:23.35]to  their  years  of  school.
[00:25.281]Taryn  Ann  Galloway  is  a  researcher  at  the  University  of  Oslo.
[00:31.171]TARYN  ANN  GALLOWAY:
[00:32.841]"The  young  men  who  were  basically  forced  to  stay  in  school
[00:35.491]for  two  years  longer  actually  did  have  higher  IQs.
[00:38.15]So,based  on  that,
[00:40.50]we  were  able  to  say  that  increasing  compulsory  schooling
[00:42.530]did  actually  have  an  effect  on  their  cognitive  abilities  as  measured  at  nineteen  years  of  age."