IMPORTANT - Just talk about the concept. Don't include formulas or tables. Short answer is fine. Please come up with your own hypothesis or research design that includes two (or more) categorical predictors/factors where you believe there would be a significant interaction between the factors in predicting the outcome. Please be specific about what your factors are and what your outcome is. Additionally, please be specific about what you predict the interaction would look like (i.e., how does the effect of factor A on the outcome vary across the levels of factor B, or vice versa?)