Reader Comments (3)

Post a new comment on this article

  • 1 Response
    15 Mar 2013
    18:28 GMT
    Most Recent
    Media Coverage of this Article Posted by PLOS_ONE_Group on 07 Dec 2012 at 22:13 GMT
  • 0 Responses
    25 Dec 2012
    12:25 GMT
    Most Recent
    "test score" in ANCOVA Posted by coreless on 25 Dec 2012 at 12:25 GMT
  • 0 Responses
    25 Dec 2012
    12:17 GMT
    Most Recent
    IQ? Posted by coreless on 25 Dec 2012 at 12:17 GMT