Assignment 4
1. Which of the following does NOT apply to true experiments?
o Answer: All experiments include a pretest
2. Which of the following does NOT apply to pretest
sensitization?
o Answer: The pretest is administered incorrectly
3. The use of pretest is advantageous because it ___________.
o Answer: Indicates how much groups have gained
4. Which of the following does NOT apply to the Solomon
randomized four-group design?
o Answer: The design includes small samples
5. In the diagram for an experimental design, the symbol O
stands for ___________.
o Answer: Observation
6. In the diagram for an experimental design, the symbol R
stands for ___________.
o Answer: Random assignment
7. All of the following apply to threats to internal validity EXCEPT
_________.
o Answer: Morbidity
8. Random assignment eliminates threats to internal validity.
o Answer: True
9. Participants are not randomly assigned to groups. This threat
to internal validity is called ___________.
o Answer: Selection
10. Participants are selected for a study on the basis of
extreme scores. This threat to internal validity is called
_________.
Answer: Statistical regression
1. Which of the following does NOT apply to true experiments?
o Answer: All experiments include a pretest
2. Which of the following does NOT apply to pretest
sensitization?
o Answer: The pretest is administered incorrectly
3. The use of pretest is advantageous because it ___________.
o Answer: Indicates how much groups have gained
4. Which of the following does NOT apply to the Solomon
randomized four-group design?
o Answer: The design includes small samples
5. In the diagram for an experimental design, the symbol O
stands for ___________.
o Answer: Observation
6. In the diagram for an experimental design, the symbol R
stands for ___________.
o Answer: Random assignment
7. All of the following apply to threats to internal validity EXCEPT
_________.
o Answer: Morbidity
8. Random assignment eliminates threats to internal validity.
o Answer: True
9. Participants are not randomly assigned to groups. This threat
to internal validity is called ___________.
o Answer: Selection
10. Participants are selected for a study on the basis of
extreme scores. This threat to internal validity is called
_________.
Answer: Statistical regression
