America in Transition Pages

Friday, October 9, 2015

The limitations and perils of scientific studies

A staple in college psychology courses is the story of polio and “spongy tar.” It seems that decades ago, researchers noticed that there were higher polio rates during times when tar was spongier in children's playgrounds. Based on that, they mistakenly concluded that spongy tar causes polio and...



from L.A. Times - Science http://ift.tt/1LEwIl4
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