Exhibit 3-4 -In Exhibit 3-4, If D₁ and S₁ Are the Original

question 161

Multiple Choice

Exhibit 3-4
-In Exhibit 3-4, if D₁ and S₁ are the original supply and demand curves and D₂ and S₂ are the new curves, respectively, then

• A)demand has decreased.
• B)the original equilibrium quantity was Q₁.
• C)supply has increased.
• D)the new equilibrium quantity is Q₄.
• E)supply has decreased.

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Definitions:

Variable-Interval Schedules

A reinforcement schedule in operant conditioning where responses are rewarded after an unpredictable amount of time has passed.

Extinction

The gradual weakening and eventual disappearance of a conditioned response when the conditioned stimulus is no longer paired with the unconditioned stimulus.

Successive Approximations

A behavior training process where closer and closer approximations to a desired behavior are reinforced until the desired behavior is achieved.

Shaping

A method of conditioning by which successive approximations towards a desired behavior are reinforced, gradually guiding the behavior closer to the target.