Scientists Use Many Techniques to Decrease Bias in Studies

question 41

Multiple Choice

Scientists use many techniques to decrease bias in studies. What do scientists call the technique in which the participants do not know if they are receiving the actual treatment or a fake?

• A)Blinding
• B)Randomization
• C)Use of control groups
• D)Use of placebos

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Definitions:

Real Wealth

The value of an individual's or entity's assets and resources, adjusted for inflation, reflecting the actual purchasing power over goods and services.

Aggregate Demand

The total demand for all goods and services within an economy at given price levels and in a given time period.

Short Run

A period during which at least one of a firm's inputs is fixed, only allowing the firm to vary some inputs while others remain unchanged.

Long Run

In economics, a period of time during which all factors of production and costs are variable, allowing full adjustment to any change in the market.