This experiment has been completed. No more data will be collected.
This experiment originally ran through the spring of 2007. The results have now been published. You can read an every-day language explanation of the experiment and its results here.
The survey is still here for archival purposes, but it's not that interesting, and you won't learn anything about your birth order from participating in it. Instead, you might prefer to participate in some of our ongoing experiments instead.
Want to be notified when new experiments or results are available? Join our Google Group.
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