If Astronauts Were to Set Up a Permanent Settlement at Tranquility

question 226

Multiple Choice

If astronauts were to set up a permanent settlement at Tranquility Base on the Moon,how many times each year would Earth rise and set as seen by a resident of this base?

• A) 12 times each year
• B) 13 times each year
• C) once each year
• D) never because Earth would remain essentially motionless in the sky.

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Definitions:

Moderator Variables

Variables that explain when, where, or for whom an effect is most likely to occur.

Random Assignment

A method in experimental design where participants are allocated to different groups on a random basis to reduce bias and increase the validity of the results.

Construct Validity

The extent to which a test or instrument measures the theoretical construct it's intended to measure.

Experimenter Bias

The possibility that the experimenter’s knowledge of the condition a particular participant is in could affect her behavior toward the participant and thereby introduce a confounding variable to the independent variable manipulation.