The Subjects in the Experimental Group Receive the Experimental Drug

question 194

Multiple Choice

The subjects in the experimental group receive the experimental drug, while the subjects in the control group receive a placebo. Although the experimenter knows which subjects are in the experimental group and which are in the control group, the subjects themselves do not know who is in which group or who received the real drug and who the placebo. This experimenter is using

• A)a double-blind study to control for researcher bias.
• B)a single-blind study to control for research participant bias.
• C)random selection to control the extraneous variables.
• D)random assignment to control the dependent variables.

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Definitions:

Kirchhoff's Voltage Law

A principle in electrical engineering that states that the sum of the electrical voltage differences around any closed network is zero.

Thevenin's Theorem

A principle that simplifies a complex electrical circuit to a single voltage source and series resistance for easier analysis.

Equivalent Circuit

A simplified electrical circuit that replicates the performance characteristics of a more complex circuit or electrical device.

Norton's Theorem

An electrical theorem that simplifies complex circuits into equivalent circuits made of a single current source and parallel resistance.