With schools under pressure to meet standardized testing goals, recess has been cut back and unstructured play time for kids is vanishing. The result is that many kids don't know how to play. These kids may struggle with the give-and-take of playground games, said Kathy Hirsh-Pasek, a psychologist at Temple, who specializes in child development." If kids were left to have some time on their own, they would in fact develop play," Hirsh-Pasek said. "Now what we do is, we endanger the species by taking play opportunities away from them."