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 … Read More
Real and Illusory Correlations, Scatterplots, and Causation
In this video I explain the dangers of illusory correlations and confirmation bias, correlational studies, patterns of variation, r-values, scatterplots and conclusions about causation. Try guessing the r-value from a scatterplot at www.guessthecorrelation.com Don’t forget to subscribe to the channel … Read More