Research designs that have several of the key features of randomized experimental designs,such as pre-post measurement and treatment-control group comparisons,but lack random assignment to a treatment group are called _______________ designs.

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The Answer of Research designs that have several of the key features of randomized experimental designs,such as pre-post measurement and treatment-control group comparisons,but lack random assignment to a treatment group are called _______________ designs.

Research Designs That Have Several of the Key Features of Randomized