The Shiny–and Potentially Dangerous—New Tool for Predicting Human Behavior

The Shiny–and Potentially Dangerous—New Tool for Predicting Human Behavior

Studies of twins have played an important role in determining that genetic differences play a role in the development of differences in behavior.

(Photo by Jelleke Vanooteghem on Unsplash)


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Eric Turkheimer
Eric Turkheimer is a professor of psychology at the University of Virginia. From 2003 to 2008 he was Director of Clinical Training. Turkheimer has been an Associate Editor for Psychological Assessment, is currently an Associate Editor of Behavior Genetics and has served on the editorial boards of Journal of Personality and Social Psychology and Perspectives on Psychological Science. In 2009, he was awarded the James Shields Memorial Award for outstanding research in Behavioral Genetics. He is a past President of the Behavior Genetics Association. His current research includes detection of G by E interactions in twin studies of intelligence, development of statistical methods for analyses of children of twins, and the use of twins to establish quasi-experimental control in studies of developmental associations between parenting behavior and offspring outcomes in adolescence. His overarching research goal is to explore the possibilities and limitations of behavior genetics as a means of expanding the scope and rigor of human behavioral science.
This man spent over 70 years in an iron lung. What he was able to accomplish is amazing.

Paul Alexander spent more than 70 years confined to an iron lung after a polio infection left him paralyzed at age 6. Here, Alexander uses a mirror attached to the top of his iron lung to view his surroundings.

Allison Smith / The Guardian

It’s a sight we don’t normally see these days: A man lying prone in a big, metal tube with his head sticking out of one end. But it wasn’t so long ago that this sight was unfortunately much more common.

In the first half of the 20th century, tens of thousands of people each year were infected by polio—a highly contagious virus that attacks nerves in the spinal cord and brainstem. Many people survived polio, but a small percentage of people who did were left permanently paralyzed from the virus, requiring support to help them breathe. This support, known as an “iron lung,” manually pulled oxygen in and out of a person’s lungs by changing the pressure inside the machine.

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Sarah Watts

Sarah Watts is a health and science writer based in Chicago.

When doctors couldn’t stop her daughter’s seizures, this mom earned a PhD and found a treatment herself.

Savannah Salazar (left) and her mother, Tracy Dixon-Salazaar, who earned a PhD in neurobiology in the quest for a treatment of her daughter's seizure disorder.

LGS Foundation

Twenty-eight years ago, Tracy Dixon-Salazaar woke to the sound of her daughter, two-year-old Savannah, in the midst of a medical emergency.

“I entered [Savannah’s room] to see her tiny little body jerking about violently in her bed,” Tracy said in an interview. “I thought she was choking.” When she and her husband frantically called 911, the paramedic told them it was likely that Savannah had had a seizure—a term neither Tracy nor her husband had ever heard before.

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Sarah Watts

Sarah Watts is a health and science writer based in Chicago.