Dr Wilkins Randomly Assigns Subjects to One of Two Groups

question 1

Multiple Choice

Dr. Wilkins randomly assigns subjects to one of two groups. He is interested in the effects of caffeine on anxiety levels. He gives subjects in the first group an extra two cups of coffee a day for six months. The second group receives an extra two cups of decaffeinated coffee a day for the same time period. Importantly, subjects do not know whether they are being given regular or decaffeinated coffee. By providing one group with decaffeinated coffee, Dr. Wilkins is trying to account for which potential element of the experiment?

• A) participant fraud
• B) inter-rater reliability
• C) the placebo effect
• D) variability

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Definitions:

Monetary Policy

The set of actions by a central bank or monetary authority to control the supply of money and interest rates in its economy.

Monetary Policy

The process by which the central bank or monetary authority of a country manages the supply of money in order to achieve specific goals such as controlling inflation, maintaining employment, and stabilizing the currency.

Interest Rates

The cost of borrowing money or the return on investment for savings, typically expressed as a percentage.

Taxes

Compulsory financial charges or levies imposed by a government on individuals or organizations to fund public expenditures.