Sample Size: How Much Data Do You Actually Need?

“How many participants do I need?” It’s probably the single most common question students and early-career researchers ask me when they’re designing a study. And it’s a fair question, you can’t conduct research without knowing how much data to collect. But the honest answer is rarely the one people want to hear. The short version: … Read more

From SPSS to R – Why the Switch Matters

If you studied psychology in Georgia, or in most of the world, really, you learned statistics through SPSS. You opened the data, you clicked through menus, you got tidy output tables, and you wrote up your results. SPSS has been the default statistical software in psychology departments for decades, and that legacy runs deep. But … Read more

From Explanation to Prediction: How Data is Reshaping Psychology

For most of its history, psychology has been a discipline of explanation. We observe behavior, we build theories, we try to understand why people think, feel, and act the way they do. And that work matters enormously – it always will. But something is changing. Quietly, and then not so quietly, psychology is becoming a … Read more

Welcome to Psycholo.ge – The Science of Human Behavior, Measured.

Welcome – and thank you for visiting Psycholo.ge. This site is something I’ve wanted to build for a long time: a dedicated space where psychometrics, research methodology, and the psychology of the digital world come together. After years of working in educational assessment and teaching at the university level, I felt it was time to … Read more