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Consumption possibilities
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all the things that you can afford to buy.
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Utility
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benefit or satisfaction from consuming a good or service
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Total Utility
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is the total benefit a person gets from the consumption of goods. Generally, more consumption gives more total utility.
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Marginal Utility
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is the increase in total utility that results from consuming one more unit of the good.
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Diminishing Marginal Utility
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the decrease in marginal utility as the quantity of the good consumed increases
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Marginal Utility per Dollar
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the marginal utility from a good that results from spending one more dollar on it
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Behavioural Economics
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studies the ways in which limits on the human brain's ability to compute and implement rational decisions influence economic behaviour...
...both the decisions that people make and the consequences of those decisions for the way markets work.
...both the decisions that people make and the consequences of those decisions for the way markets work.
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Bounded Rationality
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is rationality that is bounded by the computing power of the human brain
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Bounded Willpower
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is the less-than-perfect willpower that prevents us from making a decision that we know, at the time of implementing the decision, we will later regret
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Bounded self-interest
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is the limited self-interest that sometimes results in suppressing our own interests to help others
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The endowment effect
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is the tendency for people to value something more highly simply because they own it
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Neuroeconomics
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is the study of the activity of the human brain when a person makes an economic decision
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Budget line
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describes the limits to the household's consumption choices
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Indifference curve
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is a line that shows combinations of goods among which a consumer is indifferent.
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Marginal rate of substitution
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measures the rate at which a person is willing to give up good y to get an additional unit of good x while at the same time remain indifferent (remain on the same indifference curve).
The magnitude of the slope of the indifference curve measures the marginal rate of substitution.
The magnitude of the slope of the indifference curve measures the marginal rate of substitution.
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Diminishing marginal rate of substitution
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is a general tendency for a person to be willing to give up less of good y to get one more unit of good x, while at the same time remaining indifferent as the quantity of good x increases.
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Price effect
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The effect of a change in the price of a good on the quantity of the good consumed
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Income effect
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The effect of a change in income on the quantity of a good consumed
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Substitution effect
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is the effect of a change in price on the quantity bought when the consumer remains on the same indifferent curve.
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Firm
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an institution that hires factors of production and organizes them to produce and sell goods and services.
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Economic Profit
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is equal to total revenue minus total cost, with total cost measured as the opportunity cost of production.
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Implicit rental rate
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the firm's opportunity cost of using the capital it owns
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Economic depreciation
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is the change in the market value of capital over a given period.
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Normal profit
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The profit that an entrepreneur can expect to receive on average
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Short run
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a time frame in which the quantity of one or more resources used in production is fixed
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Long run
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a time frame in which the quantities of all resources—including the plant size—can be varied
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Sunk cost
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a cost incurred by the firm and cannot be changed.
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Total product
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is the total output produced in a given period
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Marginal product
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labour is the change in total product that results from a one-unit increase in the quantity of labour employed, with all other inputs remaining the same
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Average product
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equal to total product divided by the quantity of labour employed
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Law of diminishing returns
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As a firm uses more of a variable input with a given quantity of fixed inputs, the marginal product of the variable input eventually diminishes
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Total cost
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is the cost of all resources used
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Total fixed cost
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the cost of the firm's fixed inputs. Fixed costs do not change with output
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Total variable cost
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the cost of the firm's variable inputs. Variable costs do change with output
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Marginal cost
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the increase in total cost that results from a one-unit increase in total product
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Average fixed cost
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total fixed cost per unit of output.
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Average variable cost
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is total variable cost per unit of output
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Average total cost
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total cost per unit of output
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Long-run average cost curve
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the relationship between the lowest attainable average total cost and output when both the plant and labour are varied
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Economies of scale
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are features of a firm's technology that lead to falling long-run average cost as output increases
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Diseconomies of scale
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features of a firm's technology that lead to rising long-run average cost as output increases
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Constant returns to scale
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features of a firm's technology that lead to constant long-run average cost as output increases.
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Minimum efficient scale
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the smallest quantity of output at which the long-run average cost reaches its lowest level
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Price taker
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price taker is a firm that cannot influence the price of a good or service
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Marginal revenue
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the change in total revenue that results from a one-unit increase in the quantity sold
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Shutdown point
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the price and quantity at which it is indifferent between producing the profit-maximizing quantity and shutting down.
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Short-run market supply curve
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shows the quantity supplied by all firms in the market at each price when each firm's plant and the number of firms remain the same