ECON 101 Lecture Notes - Lecture 1: Monopolistic Competition, Oligopoly, Human Capital

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30 Apr 2018
Department
Course
Professor
Economics 101
Lori Leachman
Part 1 Lecture
Definition of Economics: study of how individual & society choose among alternative uses of scarce
resources to produce & consume goods & services
o Scarce resources: unlimited wants - not enough resources
Scarcity necessitates choice
o Individuals: con
o sumers, firms, labor - Microeconomics
o Society: consumers, business, government, foreign sector - Macroeconomics
o Resources
Land: raw material (acreage & natural resources from land)
Labor: human input (physical and mental labor (human capital))
Capital: tools, machines, equipment used to produce something else - production
resources
Entrepreneurship: innovation & risk taking (human capital)
o Microeconomics: focus on individuals, firms & their interaction in markets
Individuals are consumers or labor (input resources) - always want max utility
(satisfaction)
Firms combine & process inputs to create outputs - always want max profit
Bottom line firm - maximizes profit
Double bottom line firm - maximizes profit & sustainability (environmental)
Triple bottom - maximizes profit & sustainability & social consciousness
Can maximize
Profit - revenue minus costs
Social welfare - social consciousness
Market share - user base; eyeballs
Revenue - all money brought in
o Markets - interaction between firms and individuals
Perfect Competition: (construct & ideal; doesn’t really exist)
No barriers to entry/exit - easy to join market, no large requirements
Large # of small firms - no one really influences market
Homogenous product - everyone’s product is the same, no consumer preference
Price takers - market sets price
Monopolistic Competition: (real competitive markets - ads)
No barriers to entry/exit
Large # of small firms
Heterogeneous Product - product differentiation; branding & ads
Price setter - ability to set price due to branding
Oligopoly: entertainment, pharmaceutical... etc
High barriers to entry/exit - copyrights & patenting & large capital requirements
(startup costs); gov. won’t let them exit or merge b/c can lead to monopoly
Small # of big firms - dominant firms, few large ones that matter
Heterogeneous product
Price setter
Monopoly: (one dominant firm)
High barriers to entry/exit - can sustain large profits/losses
One dominant firm
Homogenous product - only one product
Price setter
o Competition comes from outside industry (electric to solar)
Very high limits - can set high limits
Regulated by government (technically illegal)
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