Imagine an Experiment in Which Participants Read an Editorial Supporting

Essay

Imagine an experiment in which participants read an editorial supporting the idea that public school teachers should be paid more money. One independent variable is whether the editorial is said to be written by a teacher or by a construction worker. A second independent variable is whether the editorial only presents arguments in favor of its position or whether it also presents (and addresses) arguments against its position. Sketch a graph showing some hypothetical results of this study and explain what these results are in terms of main effects and interactions.