NEW YORK -- Think you're smarter than a fifth-grader? How about a 5-year-old chimp? Japanese researchers pitted young chimps against human adults in tests of short-term memory and, overall, the chimps ...

NEW YORK - Never mind that TV show that asks if you're smarter than a fifth-grader. Is your memory better than a young chimp's? Maybe not. Japanese researchers pitted young chimps against human adults ...

The pressure of a watching audience can have positive or negative effects on human performance, and it turns out the same is true of our closest relatives. Christen Lin at Kyoto University, Japan, and ...

The more we try to understand chimpanzees, one of our closest relatives, the more we find ourselves humbled by the richness and complexity of their lives — and of their intelligence. Today, on World ...