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Suppose that in a free market, 2,000 patients purchase an operation to receive an artificial heart at a price of $500,000 per operation.Without the heart, each patient will die.The government decides this price is too high and imposes a maximum price of $200,000.Everything else equal,
Conservation
A concept in cognitive development where a child understands that changing the form of a substance or object does not change its amount, overall volume, or mass.
Object Permanence
The understanding that objects continue to exist even when they cannot be seen, heard, or touched.
Reversibility
In cognitive psychology, the ability to recognize that actions can be reversed and objects can be returned to their original state.
Sensorimotor
Referring to the developmental stage in infants and toddlers where they explore the world and learn about it through their senses and motor activities.
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