________ is frequently employed in psychological research, and therefore raises ethical questions that must be addressed by the researcher.
A) Electroshock
B) Psychophysiological measurement
C) Deception
D) Fraud
Question 2
Validity is best achieved by
A) not interfering with variables.
B) simply reporting all observations.
C) choosing a well-studied area of research.
D) controlling for extraneous variables.