Chapter 11:Technology, Production & Costs

Chapter 11: Technology, Production & Costs

Introduction

  • Overview of economic principles regarding technology, production, and costs in firms.

  • Objectives of the chapter include:

    • Distinguishing between short run and long run.

    • Explaining and illustrating a firm’s short-run product and cost curves.

    • Understanding and deriving a firm’s long-run average cost curve.

Decision Time Frames

  • Profit Maximization: Firm’s main objective, making decisions to maximize profits.

  • Time Frames:

    • Short Run: Quantity of one or more resources is fixed (e.g., capital).

    • Long Run: All resources can be varied.

      • Involves potentially irreversible decisions, referred to as sunk costs.

      • Sunk costs are irrelevant to current decisions.

Production Concepts

Short-Run Technology Constraints

  • To increase output, a firm must increase labor; three concepts describe relationships with labor:

    1. Total Product (TP): Total output produced.

    2. Marginal Product (MP): Change in total product due to is an additional unit of labor employed.

    3. Average Product (AP): Total product divided by the quantity of labor.

  • Product Schedules:

    • As labor increases, total product rises with increasing then diminishing marginal returns and variable average product.

Product Curves

  • Total Product Curve: Visual representation of how total product changes with labor quantity.

  • Marginal Product Curve: Shows changes in marginal product corresponding to total product changes.

  • Trends:

    • Increasing Marginal Returns initially from specialization, followed by Diminishing Marginal Returns due to restricted capital and space.

    • The law of diminishing returns applies as more variable input is used with fixed inputs.

Short-Run Costs

Understanding Costs in Production

  1. Total Cost (TC): Cost of all resources used, calculated as:

    • Total Fixed Cost (TFC): Fixed costs that do not change with output.

    • Total Variable Cost (TVC): Costs that change with output.

    • TC = TFC + TVC

  2. Marginal Cost (MC): Increase in total cost resulting from a 1-unit increase in total product.

    • MC behavior: Decreases with increasing marginal returns, increases with diminishing marginal returns.

  3. Average Costs: Derived from total costs measures:

    • Average Fixed Cost (AFC), Average Variable Cost (AVC), Average Total Cost (ATC) = AFC + AVC.

  • U-Shaped AVC Curve: Initially falling then rising due to marginal product variations and fixed costs distribution.

Short-Run Cost Curves

  • Graphical representation of cost curves:

    • MC, AFC, AVC curves demonstrate cost behavior with output.

  • ATC Curve: U-shaped due to the dual effects of fixed costs spreading over output and diminishing returns impacting variable costs.

Long-Run Costs

Overview of Long-Run Cost Dynamics

  • All inputs and costs are variable in the long run.

  • Production Function: Represents maximum attainable output versus capital and labor quantities.

  • Diminishing marginal returns apply to both labor and capital, influencing short-run costs.

Economies of Scale

  • Economies of Scale: Falling long-run average costs as output increases due to technology.

  • Diseconomies of Scale: Rising long-run average costs at high output levels.

  • Minimum Efficient Scale: The output level where LRAC is minimized; identifies optimal production scale.

Key Graphs and Figures

  • Multiple figures demonstrate the relationships between production outputs, costs, and efficiency across different scale plants.

  • LRAC and cost curves highlight the least-cost production approaches.

Conclusion

  • Understanding technology and production costs is critical for firms to make informed decisions about capacity, labor, and resource management to achieve profitability.