The paper is behind a paywall, but this 2009 Scientopia post has some more interesting details: http://scientopia.org/blogs/scicurious/2009/07/17/friday-weird-s

The paper is behind a paywall, but this 2009 Scientopia post has some more interesting details: http://scientopia.org/blogs/scicurious/2009/07/17/friday-weird-science-refridgerator-mothers-vs-refridgerator-kids/ http://scientopia.org/blogs/scicurious/2009/07/17/friday-wei... It sounds as though the ethical aspects of the experiment were considered pretty carefully, for example.