Multiple Choice
Which of the following statements regarding independent variables is true?
A) They must involve qualitative variables.
B) They must have two or more levels.
C) They must be reliably measured.
D) They must be held constant.
Correct Answer:

Verified
Correct Answer:
Verified
Q20: Which of the following is used to
Q21: In a within-subjects design,<br>A)changes within individual participants
Q22: Demand characteristics are<br>A)the experimenter's expectancies about what
Q23: Which of the following is not a
Q24: What are the three essential properties of
Q26: When researchers use simple random assignment,<br>A)each participant
Q27: In the context of experimental research, a
Q28: Independent variable is to subject variable as
Q29: Which of the following is used in
Q30: Contrast simple random assignment with matched random