This document discusses various methods used in educational psychology research: experimental, observation, clinical, and differential. The experimental method involves manipulating variables to test hypotheses. Observation methods involve observing human behavior without intervention. The clinical method uses case studies to understand issues like fears and anxieties. Differential psychology examines individual differences in behavior and the underlying processes, using methods like correlations, field surveys, and longitudinal studies. The advantages and disadvantages of these methods are also outlined.