On Tue, 5 Aug 2014, Mike Palij went:

One would like to have the data from the 18,420 participants in the
survey/smartphone component

I just read the article
<http://www.pnas.org/content/early/2014/07/31/1407535111.abstract>
rather quickly, and although the study is interesting, people should
understand that the n=18,420 smartphone component of the study did not
include experience sampling--at least, not sampling of daily-life
experience in all its variety and unpredictability.  Instead, the
investigators used the smartphones to administer their gambling task,
during which the phones repeatedly asked "How happy are you?"  So the
question was asked only while the participants were busy experiencing
wins and losses determined by the investigators.

Within that context, the study accomplished some neat things,
but--that's the context.

--David Epstein
  [email protected]

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