In the Double-Blind Procedure, Some Subjects Receive an Active Drug

question 50

Multiple Choice

In the double-blind procedure, some subjects receive an active drug while others receive a neutral, inactive substance called a ________.

• A) placebo
• B) perceptive blind
• C) control device
• D) Hawthorne implant

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Definitions:

Stimulus Level

The intensity of a stimulus which may influence the response it elicits from an organism or process.

Just Noticeable Difference

The smallest change in the intensity of a stimulus that can be detected.

Weber's Law

A principle in psychology stating that the just-noticeable difference in a stimulus is proportional to the magnitude of the original stimulus.

Opponent-Process Principle

A psychological and physiological model that explains contrasting emotional and sensory responses to stimuli.