Psychology 3228A/B Lecture Notes - Lecture 2: Homo Ergaster, Common Chimpanzee, Homo Rudolfensis

• School: Western University
• Department: Psychology
• Course: Psychology 3228A/B
• Professor: Strang

Document Summary

Great apes: gibbons, orangutan, gorilla, chimps split off from humans 5-7mya. 2 different species: chimps and bonobo (both from which we share) Common chimpanzees (pan troglodytes: males larger than females, plant gathers but also group hunting, male dominant hierarchy (enforced violently) Bonobos (pan paniscus: both sex closer in size less dominant ranking, use sex to solve conflict/fun (love not war chimps) Depending on peoples view of humans (kind/violent) family tree set differently. But evenly related to both cause there is common ancestor. Tribe: hominini full bipedalism: split from pan gave rise, stone tools; way collect/produce food changing, hunter/gathering increase in brain size. Australopiths (robust/gracile: dis(cid:272)o(cid:448)ery of (cid:862)lu(cid:272)y(cid:863, able to reconstruct brain, jaw, pelvis/hip joint. Early homo: ho(cid:373)o ha(cid:271)ilis (cid:862)ha(cid:374)dy (cid:373)a(cid:374)(cid:863) gave rise to our line of ancestors, pote(cid:374)tial se(cid:272)o(cid:374)d early ho(cid:373)o (cid:862)rudolfe(cid:374)sis(cid:863) (cid:449)/larger teeth. Later homo: emergence of even larger brain (homo eretus/ergaster) in africa, expanded range and colonized europe/asia, modern humans arrive appx.