_____________ is an effect of two independent variables operating simultaneously and in combination on a dependent variable.It is a larger effect than occurs from the sum of each independent variable working separately.
A) Pretest
B) Posttest
C) Main effect/interaction effect
D) Experimental group
Correct Answer:
Verified
Q11: An _ is another one-group design that
Q12: The ability of experimenters to strengthen the
Q13: A threat to internal validity due to
Q14: A _ is measurement of the dependent
Q15: _ are stronger than preexperimental designs.They are
Q17: The independent variable in experimental research is
Q18: _ is a threat to internal validity
Q19: _,or attrition,arises when some subjects do not
Q20: A _ is measurement of the dependent
Q21: List and describe the major threats to
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