Research designs

        Describe each of the following research designs: The simple pretest-posttest design The pretest-posttest design with a control group The pretest-posttest design with multiple pre-tests The longitudinal design with treatment and control groups The cohort design. Course Materials: Title: Criminal Justice Policy and Planning: Planned Change (5th ed.) Author: Welsh, W., & Harris, P. Year Published: 2016 Publisher: Routledge/Anderson Publishing ISBN: 9780323298858