Confirmatory Research

Arrested Theory Development: The Misguided Distinction Between Exploratory and Confirmatory Research

Science progresses by finding and correcting problems in theories. Good theories are those that help facilitate this process by being hard to vary: They explain what they are supposed to explain, they are consistent with other good theories, and they …

Do p values lose their meaning in exploratory analyses? It depends how you define the familywise error rate

Several researchers have recently argued that p values lose their meaning in exploratory analyses due to an unknown inflation of the alpha level (e.g., Nosek & Lakens, 2014; Wagenmakers, 2016). For this argument to be tenable, the familywise error …

Preregistration of exploratory research: Learning from the golden age of discovery

Preregistration of study protocols and, in particular, Registered Reports are novel publishing formats that are currently gaining substantial traction. Besides rating the research question and soundness of methodology over outstanding significance of …