Describe single-case experimental designs and discuss reasons to use this design. Describe the one-group posttest-only design.
Describe the one-group pretest-posttest design and the associated threats to internal validity that may occur: history, maturation, testing, instrument decay, and regression toward the mean.
Describe the nonequivalent control group design and nonequivalent control group pretest- posttest design, and discuss the advantages of having a control group.
Distinguish between the interrupted time series design and control series design.
Describe cross-sectional, longitudinal, and sequential research designs, including the advantages and disadvantages of each design.
Define cohort effect.