What is a pretest-postest control-group research design?? True experimental research design!!

In this video, I explain the first type of true experimental research design called pretest-posttest control-group design. Its advantages and disadvantages with an example are also explained. Previous research designs are discussed in the below provided links:
What is a one-shot experimental case study?    • What is a one-shot experimental case ...  
What is one-group pre-test/post-test research?    • What is a One-group pretest/posttest ...  
Static group comparison research design:    • How to design research for a static g...  

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