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may be in today's New York Times:
More recently, Dr. Aron and colleagues have created laboratory
experiments
to test the effects of novelty on marriage. In one set of experiments,
some couples are assigned a mundane task that involves simply walking
back
and forth across a room. Other couples, however, take part in a more
challenging exercise — their wrists and ankles are bound together as
they
crawl back and forth pushing a ball.
Before and after the exercise, the couples were asked things like, “How
bored are you with your current relationship?” The couples who took part
in the more challenging and novel activity showed bigger increases in
love
and satisfaction scores, while couples performing the mundane task
showed
no meaningful changes.
http://www.nytimes.com/2008/02/12/health/12well.html?em&ex=1202965200&en=461c2f881233a98a&ei=5087%0A
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