Experimental Design . Designs that allow testing of hypotheses. Learning objectives. Describe pre-experimental, experimental and quasi-experimental research designs.
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A researcher studies the effects of two different kinds of note-taking training (one of which is placebo) on the kinds of notes that college students take. Her sample consists of students enrolled in two sections of an undergraduate course in educational psychology; with the flip of a coin, she randomly determines which section will be the treatment group and which will be the control group. She analyzes the content of students’ class notes both before and after the training, making the prediction that the two groups’ notes will be similar before the training but qualitatively different after the training.
Quasi-experimental: Nonrandomized control group pre/post test (Design 8)