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Mixing Memory: CogBlogGroup: Tomasello Chapter 2, Part 1: What ...

It's just what it sounds like. It's a test to determine if an individual (human or nonhuman) understands the basic properties of solid objects, which include numerosity (most things don't spontaneously multiply themselves), motion, and permanence (things don't just disappear). Here are some ... Primates, unlike other mammals, are also able to understand relational categories in non-social domains, though as Tomasello notes, they must be extensively trained to do so.