1- utility & pref Flashcards
model of consumer behaviour premises
- preference determines pleasure derived from g&s consumed
- constraints faced on choices
- maximise wellbeing / pleasure subject to constraints
good a ≻b
strict preference
good a ≿ b
weak preference
good a ∼ b
indifference
assumptions about preferences
completeness, transitivity, monotonicity
completeness
consumers rank bundles when choosing btw them
transitivity
consumer rankings logically consistent in the sense that if a ≻b, and b ≻c, then a ≻c
monotonicity
more is better (excluding bads such as pollution)
indifference curve
all bundles of goods viewed as equally desirable
Ic curve properties
farther from origin preferred, IC curves cannot: cross, slope downwards, be thick
pros of mathematical models
rigorous, cohesive, refutable, practical
cons of mathematical models
strong simplifying assumptions often made
can utilities of diff consumers be compared
no- U function of each consumer is different