_________________ has one group,a pretest,a treatment,and a posttest.It lacks a control group and random assignment.

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The one-group pretest-posttest design involves one group that receives a treatment and is evaluated with a pretest and posttest. However, it lacks a control group and random assignment, which are necessary for a classical experimental design. Therefore, this design falls under the category of quasi-experimental designs. The one-shot case study design, on the other hand, involves only a single measurement after a treatment instead of a pretest-posttest evaluation.

_________________ Has One Group,a Pretest,a Treatment,and a Posttest