PSY362H1 Lecture Notes - Lecture 6: Causal Reasoning, New Caledonian Crow, Acoustic Resonance
Document Summary
Genuine tool: new caledonian crow use stick to get a worm out of a tree trunk, chimpanzee in tanzania use a stick to scrape prey out of the tree trunk. Borderline tool: objects are used, but not manipulated: burrowing owls place mammalian dung around their nest to attract prey (ex. dung beetles) Grey basket with a food reward is placed inside a tube. The tube is too long for the crow to be able to pick up the basket by sticking it"s beak inside. Crow needs to learn how to use the wire to pick up the basket. Presented with 2 types of wires: straight wire, bent wire. To get food reward needs to learn to use the bent wire to pick up the basket. Result: (modifications of tools in captive new caledonian crow: video) Crow bends the wire and uses it to pick up the basket. Doesn"t necessarily involve causal understanding of the situation.
