Multiple Choice
Major threats to validity in a "pretest & posttest with one experimental group only" are:
A) History,maturation,main testing,interactive testing,mortality.
B) Statistical regression,maturation,main testing,interactive testing,mortality.
C) Statistical regression,instrumentation,main testing,interactive testing,mortality.
D) History,instrumentation,main testing,interactive testing,mortality.
Correct Answer:
Verified
Correct Answer:
Verified
Q3: Quasi-Experimental Designs expose an experimental group to
Q4: Cause-and-effect inferences can be contaminated by the
Q5: A field study is an experiment done
Q6: Manipulation of independent variables in order to
Q7: The manipulation of the independent variable is
Q9: A key problem of time series is
Q10: External validity of lab experiments refers to
Q13: An interactive testing effect occurs when the
Q14: Biases that might affect the internal validity
Q15: There is a trade-off between internal validity