Describe each of the following research designs:

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                                                                  * discussion question *

Describe each of the following research designs:
  1. The simple pretest-posttest design
  2. The pretest-posttest design with a control group
  3. The pretest-posttest design with multiple pre-tests
  4. The longitudinal design with treatment and control groups
  5. The cohort design
Dear writer, I need to answer this discussion question with 500 words APA 7th edition
with  TWO references one ONLINE and one from the BOOK, we are using. 
Book: 

Title: Criminal Justice Policyand Planning: Planned Change (5th ed.)

Author: Welsh, W., & Harris, P.  

Year Published: 2016

Publisher: Routledge/Anderson Publishing

ISBN: 9780323298858

  • Welsh & Harris – Chapter 6