How to visualize interaction effects

I recently gave a workshop on data visualization. One of the topics was visualizing interaction effects (or “moderation” analyses). I think it is a great topic because it exemplifies quite well that there is not one solution to all problems. In general, I would argue that trying to visualize interaction effects is great idea. Due to the conditional nature of the effects obtained from standard regression analyses that include an interaction term, it is often… Read More »How to visualize interaction effects

Book published: Situational Privacy and Self-Disclosure

I finally can say that I published my dissertation. Although my defense was already in December, it took some time to wrap everything up and get the book published. But what did I actually write about? Using both a theoretical argumentation and an empirical investigation, I rationalize the view that in order to understand people’s privacy perceptions and behaviors, we need to adopt a situational perspective. To this end, the book is divided into three… Read More »Book published: Situational Privacy and Self-Disclosure

How to center in multilevel models

Ever thought about centering your variables before running an regression based analysis? From my personal experiences with students, chances are high that you haven’t. Although a useful data transformation procedure for many different types of statistical analyses, centering is seldom taught in fundamental statistic courses. Although the mathematical principles behind it may seem arbitrary, its effects on results are oftentimes quite strong. Centering is useful in standard statistical modeling (e.g., OLS regression), but its usefulness… Read More »How to center in multilevel models

Hello and welcome back!

If you have ever been on this website before, you might realize that the design changed slightly and some new contents appear on a couple of sites. Yes, I did move to wordpress. Although it was great fun to create this website from scratch and keep it simple and fast by implementing only basic html and css, I nonetheless missed some more elaborate functions that I could not program myself (e.g., comments, tags, categories, footnotes…).… Read More »Hello and welcome back!