Bass-Krueger wanted to test how large this effect was. He had some of his several dozen subjects play Tetris for 15 minutes. Then he gave everyone a spatial reasoning test similar to those used in IQ assessments. The results were staggering: Tetris players scored more than 55% higher than the control group. “Even in 15 minutes it can still have an effect,” Bass-Krueger told us here in Atlanta at the Intel International Science & Engineering Fair, where he presented his results.
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