The Experimental Method (Intro Psych Tutorial #14)

In this video I explain the experimental method and how the combination of manipulation and random assignment can help to eliminate the third variable problem. I also explain why random assignment helps avoid self-selection and bias so that we can assess the role of the independent variable on the dependent variable.

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Enable closed-captioning or find a full transcript of this video here: http://www.psychexamreview.com/the-experimental-method/ ... https://www.youtube.com/watch?v=1MGTkf5eghQ