Tag: four-cup test

  • Nation & World

    Brainy birds

    A new study shows that African grey parrots can perform some cognitive tasks at levels beyond those of 5-year-old humans. The results not only suggest that humans aren’t the only species capable of making complex inferences, but also point to flaws in a widely used test of animal intelligence.

    5 minutes
    Scientist Irene Pepperberg with African grey parrot, Griffin.