To Examine the Value of Looking at Old Tests, Professor

question 77

Multiple Choice

To examine the value of looking at old tests, Professor King hands out copies of old tests to the first 20 students who come to class one day. Later she finds that these students got better grades than the other students in the class. What is wrong with this experiment?

• A) It was triple blind.
• B) There is a lack of random assignment to groups.
• C) There is a lack of demand characteristics.
• D) The Clever Hans effect occurs.

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Definitions:

Brain

The central organ of the human nervous system, responsible for processing sensory information, and controlling thoughts, memories, emotions, and motor skills.

Hemisphere

Half of the terrestrial globe or celestial sphere, especially one of the halves into which the earth is divided, either north-south by the equator or east-west by a meridian.

Phencyclidine (PCP)

Substance that produces euphoria, slowed reaction times, and involuntary movements at low doses; disorganized thinking, feelings of unreality, and hostility at intermediate doses; and amnesia, analgesia, respiratory problems, and changes in body temperature at high doses.

Perceptual Changes

Alterations in the way an individual interprets or experiences sensory information.