Field Experiments Differ from Laboratory Experiments in That

question 28

Multiple Choice

Field experiments differ from laboratory experiments in that

• A) laboratory experiments include controls, but field experiments need not.
• B) field experiments can be more easily replicated than laboratory experiments.
• C) laboratory experiments allow variables not of direct interest to be controlled, while in field experiments these typically vary.
• D) field experiments can teach us about ecological systems, but laboratory experiments cannot.
• E) field experiments are often used by ecologists, but laboratory experiments never are.

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Definitions:

Competitive Industry

An industry characterized by many buyers and sellers, such that no single market participant has significant influence over prices.

Long-Run Equilibrium

A state in which all factors of production and costs are variable, and firms are making neither excess profit nor losses, typically reached over time.

Decreasing-Cost Industry

An industry in which expansion through the entry of firms lowers the prices that firms in the industry must pay for resources and therefore decreases their production costs.

Long-Run Supply Curve

A graphical representation showing the relationship between market prices and the amount of output that firms are willing to supply in the long run.