ANTHR 101 Lecture Notes - Lecture 9: Technical Intelligence, Social Intelligence, Bipedalism
Document Summary
Efficient bipedalism as the primary form of locomotion is seen only in hominins. Efficient means of covering long distances and provisioning by males of females with dependents. Walking on 2 feet, increase brain size. The relationship between body and brain size is the index of encephalization. Modern human brain size is well beyond that expected for a primate of similar body weight: a central component of recent humans. Technological intelligence and tool use: technical intelligence- ability to use tools to extract food and other resources from their natural environment, problems: Start to see an increase in brain size. Don"t see tool use till 2 million years later. Loss of small animals that had usually survived. Ex: orangutan, not super social but have large brain sizes. Dental arcade: apes are more u shaped, humans are parabolic (more rounded, facial prognathism/orthognathism (face shape) Prognathism: the face is more outward and forward.
