Science. 1973 Nov 30;182(4115):943-5. doi: 10.1126/science.182.4115.943.
Juvenile chimpanzees, carried around an outdoor field and shown up to 18 randomly placed hidden foods, remembered most of these hiding places and the type of food that was in each. Their search pattern approximated an optimum routing, and they rarely rechecked a place they had already emptied of food.
幼年黑猩猩被带到一个户外场地，展示了多达 18 个随机放置的隐藏食物，它们记住了这些隐藏地点的大部分和每个地点的食物类型。它们的搜索模式接近最佳路径，而且它们很少会再次检查已经没有食物的地方。
