Multiple Choice
A threat to internal validity due to something that occurs and affects the dependent variable during an experiment,but that is unplanned and outside the control of the experimenter is known as ________________.
A) testing effect
B) instrumentation
C) history effects
D) maturation effect
Correct Answer:

Verified
Correct Answer:
Verified
Q1: _ is a threat to internal validity
Q2: An experimental design in which the dependent
Q3: _is related to stability reliability.It occurs when
Q5: Also called the one-group posttest-only design,the _
Q6: Demand characteristics are another type of reactivity.Subjects
Q7: All experimental designs are variations of the
Q8: The ability of experimenters to strengthen the
Q9: Experimenter expectancy is a type of reactivity
Q10: A _ is measurement of the dependent
Q11: _ are stronger than preexperimental designs.They are