Study guide for Methodologie 1 at VU Amsterdam covering the fundamentals of psychological research methods. Chapters 1-2 introduce empiricism, the theory-data cycle, hypothesis testing, falsifiability, and Merton's scientific norms, followed by critical analysis of information sources including personal experience, intuition, and cognitive biases (confirmation bias, availability heuristic, bias blind spot). Essential for understanding research design, comparison groups, and evidence-based pra...