Rational Decision Making and Demand

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Questions and Answers

What does a shift to the right in the demand curve indicate?

  • Decrease in demand
  • Increase in demand (correct)
  • No change in demand
  • Increase in supply

Which factor is NOT part of the conditions of demand represented by the mnemonic PIRATES?

  • Income
  • Population
  • Advertising
  • Technology (correct)

If the price of a substitute good increases, what is likely to happen to the demand for the other substitute?

  • It will increase (correct)
  • It will decrease
  • It will fluctuate unpredictably
  • It will remain unchanged

In what scenario would an increase in income result in a decrease in demand?

<p>For inferior goods (D)</p> Signup and view all the answers

What effect might a successful advertising campaign have on a firm's demand?

<p>It will increase demand (A)</p> Signup and view all the answers

If the population of a country significantly increases, what can be expected regarding the demand for goods?

<p>Demand for most products is likely to increase (B)</p> Signup and view all the answers

What happens to the demand curve for DVDs if the price of DVD players decreases?

<p>Demand for DVDs increases (A)</p> Signup and view all the answers

What is the primary goal of firms in a market according to economic theory?

<p>To maximize profit (D)</p> Signup and view all the answers

Which of the following best describes the concept of cross elasticity of demand?

<p>The measure of how demand for a good changes as the price of a related good changes (C)</p> Signup and view all the answers

What does a movement along the demand curve indicate?

<p>A change in price of the good (D)</p> Signup and view all the answers

What defines the term 'demand' in economic terms?

<p>The ability and willingness to buy a good (D)</p> Signup and view all the answers

When the demand curve shifts from D1 to D2, what does it indicate?

<p>A decrease in demand (D)</p> Signup and view all the answers

What is the term used for the rational consumer who makes decisions to maximize utility?

<p>Homo Economicus (B)</p> Signup and view all the answers

According to behavioral economists, what is a challenge to the traditional view of rational decision making?

<p>Economic agents often lack necessary information (B)</p> Signup and view all the answers

A contraction in demand occurs due to what factor?

<p>An increase in the price of the good (A)</p> Signup and view all the answers

What does an extension in demand mean?

<p>Decrease in price leading to more quantity demanded (A)</p> Signup and view all the answers

What effect does a successful advertising campaign by Tesco have on its demand compared to Asda?

<p>Increase demand for Tesco and decrease demand for Asda (D)</p> Signup and view all the answers

How does government legislation affect demand for car seats?

<p>It increases demand due to legal requirements (B)</p> Signup and view all the answers

What is the primary reason for the downward slope of the demand curve?

<p>The law of diminishing marginal utility (B)</p> Signup and view all the answers

What happens to demand when consumers expect a future decrease in prices?

<p>Demand decreases immediately (C)</p> Signup and view all the answers

In relation to seasonal demand, what effect does a hot summer have on sun cream?

<p>Demand increases (A)</p> Signup and view all the answers

What does total utility represent in consumer behavior?

<p>The overall satisfaction from consuming all units of a good (D)</p> Signup and view all the answers

What is indicated by the law of diminishing marginal utility?

<p>Satisfaction decreases with each additional unit consumed (A)</p> Signup and view all the answers

If a product becomes fashionable, what is the expected impact on its demand?

<p>Demand is expected to increase (B)</p> Signup and view all the answers

What does a price elasticity of demand (PED) value of 1 indicate?

<p>Quantity demanded changes by the same percentage as price. (B)</p> Signup and view all the answers

If the price of good A increases and the quantity demanded for good B decreases, what type of relationship do goods A and B have?

<p>Complements (C)</p> Signup and view all the answers

Which of the following would likely have a price elasticity of demand (PED) less than one?

<p>Gasoline (C)</p> Signup and view all the answers

How is cross elasticity of demand (XED) calculated?

<p>% change in quantity demanded of product A divided by % change in price of product B. (B)</p> Signup and view all the answers

What is the significance of income elasticity of demand (YED) for businesses?

<p>It forecasts changes in demand based on population income changes. (A)</p> Signup and view all the answers

If a product has a PED of -2, how is consumer behavior likely to react to a price increase?

<p>Quantity demanded will decrease by a larger percentage. (B)</p> Signup and view all the answers

Which of the following statements about inelastic demand is true?

<p>The demand curve is steep. (B)</p> Signup and view all the answers

Which best describes a product with a YED greater than 1?

<p>It is a luxury good. (B)</p> Signup and view all the answers

Flashcards

Homo Economicus

The rational consumer seeking maximum satisfaction (utility).

Utility

Satisfaction received from consuming a product.

Firm Profit Maximization

Firms aim to maximize profits to benefit shareholders.

Government Social Welfare

Governments aim to increase overall public satisfaction.

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Demand

The ability and willingness to buy a product at a given price and time.

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Demand Curve Movement

Price changes cause movement along the demand curve.

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Demand Curve Shift

Non-price factors cause shifts in the demand curve.

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Conditions of Demand

Factors influencing demand shifts include population, income, etc.

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Diminishing Marginal Utility

Extra satisfaction (marginal utility) decreases as consumption increases.

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Total Utility

Total satisfaction from consuming all units of a good.

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Marginal Utility

Additional utility from consuming one more unit of a good.

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Elasticity of Demand

Measures how quantity demanded reacts to changes in other factors.

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Price Elasticity of Demand (PED)

How much demand changes due to a price change.

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Unitary Elastic (PED = 1)

Equal percentage change in quantity and price.

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Relatively Elastic (PED > 1)

Larger percentage change in quantity demanded than price.

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Relatively Inelastic (PED < 1)

Smaller percentage change in quantity demanded than price.

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Income Elasticity of Demand (YED)

How demand reacts to income changes.

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Cross Elasticity of Demand (XED)

How demand for one good reacts to price changes in another.

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PED Calculation

% change in quantity demanded / % change in price.

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YED Calculation

% change in quantity demanded / % change in income.

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XED Calculation

% change in quantity demanded of good A / % change in price of good B.

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Study Notes

Rational Decision Making

  • Homo Economicus: The rational consumer that aims to maximize utility.
  • Utility: The satisfaction derived from the consumption of a product.
  • Firms maximize profits: Firms are run for their owners and aim to maximize profit to keep shareholders happy.
  • Governments maximize social welfare: Governments work for the public and aim to maximize their satisfaction by increasing social welfare.

Demand

  • Demand: Ability and willingness to buy a particular good at a given price and time.
  • Movements along the demand curve: Changes in price cause movements along the demand curve. Increase in price = contraction in demand, decrease in price = extension in demand.
  • Shifts of the demand curve: Changes in conditions of demand, also known as factors affecting demand, cause a shift in the demand curve.
  • Conditions of demand: Factors impacting demand shifts (PIRATES mnemonic)
    • Population: Increase in population = increase in demand
    • Income: Increase in income = increase in demand for most goods
    • Related goods: Complements and substitutes impact demand.
    • Advertising: Effective advertising can increase demand.
    • Taste/Fashion: Changing fashion = changing demand
    • Expectations: Expectations of shortages or price changes can influence demand
    • Seasons: Seasonal products have fluctuating demand based on weather conditions.
    • Government Legislation: Legal requirements can affect demand, e.g., mandatory car seats.

Diminishing Marginal Utility

  • Law of Diminishing Marginal Utility: Marginal utility decreases as more of a good is consumed, assuming consumption of other goods remains constant.
  • Total Utility: Total satisfaction gained from the overall consumption of a good.
  • Marginal Utility: Change in satisfaction from consuming one additional unit of a good.

Elasticities of Demand

  • Elasticity of Demand: Measures responsiveness of quantity demanded to changes in other variables.
  • Price Elasticity of Demand (PED): Responsiveness of demand to changes in the price of the good.
    • PED Calculation: % change in quantity demanded / % change in price
    • Numerical Values:
      • Unitary Elastic (PED = 1): Quantity demanded changes by the same percentage as price.
      • Relatively Elastic (PED > 1): Quantity demanded changes by a larger percentage than price, indicating responsiveness to price changes.
      • Relatively Inelastic (PED < 1): Quantity demanded changes by less percentage than price, meaning demand is less responsive to price changes.
  • Income Elasticity of Demand (YED): Responsiveness of demand to changes in income.
    • YED Calculation: % change in quantity demanded / % change in income.
    • Significance: Helps firms understand how sales are affected by changes in consumer income.
  • Cross Elasticity of Demand (XED): Responsiveness of demand for one good to price changes of another good.
    • XED Calculation: % change in quantity demanded of good A / % change in price of good B.

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