Chapter 2- Consumer Preference Theory 

  1. Fundamental Concepts

    • Preference Relations

      • Strict preference (≻), indifference (∼), and weak preference (≽) 1

      • Basic terminology for comparing consumption baskets 1 Practical application: Comparing different combinations of goods like gelato and coffee

  2. Core Assumptions

    • Three Fundamental Assumptions

      • Completeness: Ability to compare any two baskets 1

      • Transitivity: Internal consistency in preferences 1

      • Monotonicity: More of a good is preferred 2

  3. Indifference Curves

    • Key Properties

      • Represents baskets yielding equal utility 2

      • Downward sloping when monotonicity holds 3

      • Cannot intersect 4 Additional concept: Well-behaved preferences show convex curves 5

  4. Marginal Rate of Substitution (MRS)

    • Technical Understanding

      • Definition: Rate at which consumer trades one good for another 6

      • Diminishing MRS: Willingness to trade decreases along curve 7 Practical example: Desert-water scenario demonstrates diminishing MRS 8

  5. Practice and Application

    • Exercises to Master

      • Preference relation problems 9

      • Special cases like perfect complements 5

      • Real-world applications with different types of goods 10

Study Tips

  • Focus on understanding graphical representations first

  • Practice drawing indifference curves for different scenarios

  • Work through the example problems systematically

  • Connect theoretical concepts to real-world decisions