Multiple Choice
Which of the following is NOT true of selection effects?
A) Selection effects are a type of confound.
B) Selection effects can occur when experimenters allow participants to choose their own treatment group.
C) Selection effects are unimportant for interrogating internal validity.
D) Selection effects can occur when researchers assign one type of person to one treatment group and another type of person to another treatment group.
Correct Answer:

Verified
Correct Answer:
Verified
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