PSYC 3100 Lecture Notes - Lecture 25: Diminishing Returns, Opportunity Cost, Bride Price

• School: University of Guelph
• Department: Psychology
• Course: PSYC 3100
• Professor: Pat Barclay

Document Summary

Nov 6th parenting 2: optimal brood size & parent-offspring conflict. Quantity/quality tradeoffs (exam question!!!) recall the definition of parental investment: investment in one child reduces ability to invest in others. More children = decreased survival/reproductive prospects for each (remember 30%- 50% child mortality and many other fails to mate) Somatic effort how much you are investing in your own body. Reproductive effort mating effort and parental investment (pi) Parental investment is a limited resources: more children = decreased survival in reproductive prospects. Better condition to get a child in when hitting puberty increases likelihood to mate. Graph (x=probability, y = cs): each additional egg reduces the probability of every given ones surviving of 10% (10 eggs = 0% chance of survival) Optimal brewed size (number of children species should have: clutch size * probability of them surviving, 2 kids have 80% survival therefore 2*. 8 = 1. 6, eventually hit a peak of 5. Offspring must be raised to independence (e. g. resources)