Multiple Choice
The weakness of static group comparison is that the researcher
A) is biased.
B) cannot know whether group differences prior to the experiment or if the independent variable caused differences in posttest outcomes.
C) cannot know whether group differences prior to the experiment or if the dependent variable caused differences in posttest outcomes.
D) is not needed.
Correct Answer:

Verified
Correct Answer:
Verified
Q17: Two-group posttest-only design has all parts of
Q18: Natural experiments are _ experiments that people
Q19: Researchers control experimenter expectancy by<br>A)hiring assistants.<br>B)using double-blind
Q20: Differentiate pre- versus post-test in the context
Q21: Design notation is a technique used exclusively
Q23: Discuss ethical considerations and deception in conducting
Q24: A random assignment means that an instructor
Q25: _ designs are used when it is
Q26: Threats to internal validity include all of
Q27: A placebo is an independent variable,typically an