Spanking Kids: IQ Lower For Children Who Were Spanked: Study (VIDEO)

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A new study suggests that spanking children can significantly lower their IQs.

The study, involving hundreds of U.S. children, showed the more a child was spanked, the lower his or her IQ compared with others.

"All parents want smart children," said study researcher Murray Straus of the University of New Hampshire. "This research shows that avoiding spanking and correcting misbehavior in other ways can help that happen."

On the Today Show Friday morning, Matt Lauer talked with NBC's chief medical editor, Dr. Nancy Snyderman, about the research and the implications of the work.

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