Match the items on the right to the items on the left.

1. The _____ of an experiment is a matter of how well it controls for the effects of extraneous variables.	??? instrumentation within-subjects design history pretest-posttest control group design interaction effect differential attrition posttest-only control group design testing statistical regression factorial design Solomon four-group design static group comparison internal validity interrupted time-series design selection separate-sample pretest-posttest design multiple time-series design nonequivalent control group design
2. This effect is likely to be confounded with the independent variable when a single group is studied over an extended period of time.	??? instrumentation within-subjects design history pretest-posttest control group design interaction effect differential attrition posttest-only control group design testing statistical regression factorial design Solomon four-group design static group comparison internal validity interrupted time-series design selection separate-sample pretest-posttest design multiple time-series design nonequivalent control group design
3. Randomization is designed to rule out this threat to internal validity.	??? instrumentation within-subjects design history pretest-posttest control group design interaction effect differential attrition posttest-only control group design testing statistical regression factorial design Solomon four-group design static group comparison internal validity interrupted time-series design selection separate-sample pretest-posttest design multiple time-series design nonequivalent control group design
4. A threat to internal validity when a single group is measured two or more times in the same study.	??? instrumentation within-subjects design history pretest-posttest control group design interaction effect differential attrition posttest-only control group design testing statistical regression factorial design Solomon four-group design static group comparison internal validity interrupted time-series design selection separate-sample pretest-posttest design multiple time-series design nonequivalent control group design
5. Likely to affect experimental results when subjects are selected on the basis of their extreme scores on the dependent variable	??? instrumentation within-subjects design history pretest-posttest control group design interaction effect differential attrition posttest-only control group design testing statistical regression factorial design Solomon four-group design static group comparison internal validity interrupted time-series design selection separate-sample pretest-posttest design multiple time-series design nonequivalent control group design
6. A threat to internal validity created by systematic variation over time or across experimental conditions in the measurement of the dependent variable.	??? instrumentation within-subjects design history pretest-posttest control group design interaction effect differential attrition posttest-only control group design testing statistical regression factorial design Solomon four-group design static group comparison internal validity interrupted time-series design selection separate-sample pretest-posttest design multiple time-series design nonequivalent control group design
7. A threat to internal validity when the loss of subjects varies from one experimental condition to another.	??? instrumentation within-subjects design history pretest-posttest control group design interaction effect differential attrition posttest-only control group design testing statistical regression factorial design Solomon four-group design static group comparison internal validity interrupted time-series design selection separate-sample pretest-posttest design multiple time-series design nonequivalent control group design
8. Selection and differential attrition are the primary threats to the internal validity of this pre-experimental design.	??? instrumentation within-subjects design history pretest-posttest control group design interaction effect differential attrition posttest-only control group design testing statistical regression factorial design Solomon four-group design static group comparison internal validity interrupted time-series design selection separate-sample pretest-posttest design multiple time-series design nonequivalent control group design
9. One problem with this design is that it is susceptible to a testing-X interaction effect.	??? instrumentation within-subjects design history pretest-posttest control group design interaction effect differential attrition posttest-only control group design testing statistical regression factorial design Solomon four-group design static group comparison internal validity interrupted time-series design selection separate-sample pretest-posttest design multiple time-series design nonequivalent control group design
10. This true experimental design effectively eliminates the possibility of testing-X interaction.	??? instrumentation within-subjects design history pretest-posttest control group design interaction effect differential attrition posttest-only control group design testing statistical regression factorial design Solomon four-group design static group comparison internal validity interrupted time-series design selection separate-sample pretest-posttest design multiple time-series design nonequivalent control group design
11. In this experimental design the same subjects participate in both treatment and control conditions.	??? instrumentation within-subjects design history pretest-posttest control group design interaction effect differential attrition posttest-only control group design testing statistical regression factorial design Solomon four-group design static group comparison internal validity interrupted time-series design selection separate-sample pretest-posttest design multiple time-series design nonequivalent control group design
12. An experiment in which two or more variables are manipulated.	??? instrumentation within-subjects design history pretest-posttest control group design interaction effect differential attrition posttest-only control group design testing statistical regression factorial design Solomon four-group design static group comparison internal validity interrupted time-series design selection separate-sample pretest-posttest design multiple time-series design nonequivalent control group design
13. A factorial design with two independent variables consisting of the treatment condition (presence or absence) and the pretest (presence or absence).	??? instrumentation within-subjects design history pretest-posttest control group design interaction effect differential attrition posttest-only control group design testing statistical regression factorial design Solomon four-group design static group comparison internal validity interrupted time-series design selection separate-sample pretest-posttest design multiple time-series design nonequivalent control group design
14. The effect of one independent variable on the dependent variable depends on the level of another independent variable.	??? instrumentation within-subjects design history pretest-posttest control group design interaction effect differential attrition posttest-only control group design testing statistical regression factorial design Solomon four-group design static group comparison internal validity interrupted time-series design selection separate-sample pretest-posttest design multiple time-series design nonequivalent control group design
15. When the entire population receives the treatment, this quasi- experimental design may be used by randomly selecting subjects measured before and subjects measured after the treatment.	??? instrumentation within-subjects design history pretest-posttest control group design interaction effect differential attrition posttest-only control group design testing statistical regression factorial design Solomon four-group design static group comparison internal validity interrupted time-series design selection separate-sample pretest-posttest design multiple time-series design nonequivalent control group design
16. In this quasi-experimental design, pretests and posttests are are administered to treatment and control groups but random assignment is not possible.	??? instrumentation within-subjects design history pretest-posttest control group design interaction effect differential attrition posttest-only control group design testing statistical regression factorial design Solomon four-group design static group comparison internal validity interrupted time-series design selection separate-sample pretest-posttest design multiple time-series design nonequivalent control group design
17. Resembles the one-group pretest-posttest design except there are multiple observations before and after the treatment.	??? instrumentation within-subjects design history pretest-posttest control group design interaction effect differential attrition posttest-only control group design testing statistical regression factorial design Solomon four-group design static group comparison internal validity interrupted time-series design selection separate-sample pretest-posttest design multiple time-series design nonequivalent control group design
18. Controls for the effects of history in a time-series analysis by comparing a group exposed to the treatment with other groups that are not.	??? instrumentation within-subjects design history pretest-posttest control group design interaction effect differential attrition posttest-only control group design testing statistical regression factorial design Solomon four-group design static group comparison internal validity interrupted time-series design selection separate-sample pretest-posttest design multiple time-series design nonequivalent control group design