#iq-tests

#iq-tests

Because IQ is a standardized measure, humankind's average score still sits at 100-but this isn't your granddaddy's 100. IQ tests are regularly recalibrated, and over the past many decades, when new subjects have taken an old test, they have almost always outscored their predecessors' average; Grandpa's generation might have hovered around 100, but the kids are scoring 115 ... which then becomes the new 100. This phenomenon is called the Flynn effect, and researchers still aren't sure what causes it.