as of the 1st and 2nd point, the 3rd experiment is controlled...

送交者: mangolasi 于 2008-03-25, 12:59:52:

回答: 这个试验有很多漏洞由 Enlighten 于 2008-03-25, 12:50:52:

接著他们给45名大学生5或20刀，然后要求半数学生在当天把钱花在自己身上，其余半数学生则必须拿这些钱来请客。结果表明，把钱花到别人身上的学生比花在自个身上的学生更快乐

though i agree w/ the 3rd point

yes. only the 3rd is controlled. but it introduced another - Enlighten (20 bytes) 2008-03-25, 13:04:41 (213740)
- ? the 3rd experiment can eb an entirely random one, though the - mangolasi (47 bytes) 2008-03-25, 13:25:17 (213747)
  - my use of word 'bias' is a little misleading. - Enlighten (221 bytes) 2008-03-25, 13:47:38 (213757)