Match the Key Term to Its Description

Multiple Choice

Match the key term to its description.
-Selection bias

A) Things can happen outside the experiment that change subjects' scores
B) Measurement before experimental treatment may change subjects' scores on posttest
C) Extreme scores used to select subjects will move back towards the average in subsequent testing
D) Competition between control and experimental groups can change scores
E) Subjects in the control group may feel deprived of treatment and perform worse on posttests than expected
F) Subjects will drop out of the experimental or control group at rates that change the nature of the comparison between groups
G) Subjects in the control and experimental group are initially different
H) Subjects' scores can change because they feel special for being chosen for an experiment