PSY351H5 Study Guide - Final Guide: Parental Investment, David Buss, In Utero
Document Summary
Psy351 exam questions: the theory of parental investment has come up multiple times throughout the course. Pecies (cid:449)ith pare(cid:374)tal care typically ha(cid:448)e the (cid:373)o(cid:373)s (cid:862)do (cid:373)ore(cid:863) tha(cid:374) dads, thus the pare(cid:374)tal investment theory also shaped: Paternity uncertainty hypothesis (cid:373)ales do(cid:374)(cid:859)t i(cid:374)(cid:448)est i(cid:374) thei(cid:396) offsp(cid:396)i(cid:374)g because they can never be 100% sure that they are the father of that offspring so why would they invest their (cid:396)esou(cid:396)(cid:272)es i(cid:374)to so(cid:373)ethi(cid:374)g that does(cid:374)(cid:859)t hold ge(cid:374)es. Mating opportunity hypothesis males do(cid:374)(cid:859)t ofte(cid:374) i(cid:374)(cid:448)est i(cid:374) thei(cid:396) offsp(cid:396)i(cid:374)g (cid:271)e(cid:272)ause the(cid:455) (cid:272)a(cid:374) use this energy to produce more offspring in other places. Since the parental investment is a form of sexual selection it thus has also shaped this theory: Sexual selection the p(cid:396)efe(cid:396)e(cid:374)(cid:272)e (cid:271)(cid:455) o(cid:374)e se(cid:454) fo(cid:396) (cid:272)e(cid:396)tai(cid:374) (cid:272)ha(cid:396)a(cid:272)te(cid:396)isti(cid:272)s i(cid:374) i(cid:374)di(cid:448)iduals of the other sex which is an influential force on natural selection. Therefore, the sex that is required to invest the most in their offspring will be the choosier sex when it comes to mating.
