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### 21 Cards in this Set

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 Counterbalanced design The order of the experimental conditions is varied across participants Experimental design Can randomly assign on all variables Between-subjects experimental design Each subject experiences one level of IV, and differences are compared across groups Randomized two-group design A type of between-subjects design in which there is no pretest, and you examine differences between treatment groups on the posttest Randomized two-group design stats procedure Independent measures t-test Pretest-posttest two-group design A type of between-subjects design in which there is both a pretest and a posttest Pretest-posttest two-group design stats procedure Repeated measures t-test Solomon Four-Group Design Combines the two-group designs to determine whether the posttest differences were caused by the treatment, the pretest, or the combination of treatment and pretest. Solomon Four-Group Design stats procedure ANOVA Between-participants factorial design Two or more IVs are presented in combination. This design contains every possible combination of the IVs. Can examine both main and interaction effects. Repeated measures design The same person is assigned to multiple treatments. Quasi-experimental design IVs are manipulated, but participants are not randomly assigned Static Group Comparison Only a posttest Static Group Comparison stats procedure Independent measures t-test Pretest-Posttest Nonequivalent Control Group Design An extension of the static-group comparison design that includes measures of the DV at multiple points in time. Each group is given both a pretest and a posttest, measuring the DV before and after exposure to the IV. Pretest-Posttest Nonequivalent Control Group Design stats procedure Repeated measures t-test One Group Pretest-Posttest Design One group of individuals is observed, exposed to the treatment, and then given a posttest. The treatment effect is then estimated by examining the average difference before and after the treatment One Group Pretest-Posttest Design stats procedure Repeated measures t-test (within group) Interrupted Time Series Design An extension of the one group pretest-posttest design in which there are numerous pretests and posttests Interrupted Time Series Design stats procedure Repeated measures ANOVA Replicated Interrupted Time-Series Design More than one group of participants who are exposed to the treatment at different times or are not exposed to the treatment at all.