This handbook provides an in-depth review of cutting-edge methodologies in experimental economics. It explores various methods for eliciting preferences and beliefs in both static and dynamic settings, encompassing individual and group behavior across different techniques and diverse sample pools. Additionally, it highlights recent advances in econometrics and replication strategies. The handbook serves as a comprehensive reference for scholars interested in conducting experimental research in the lab, through surveys, or in the field. - The handbook covers an array of cutting-edge experimental methodologies. - The handbook provides enough details to allow readers to design their own experiments after reading. - The handbook is written as a textbook and is self-contained. Since it brings readers to the frontier of the field, it can serve both graduate students and scholars wishing to use experiments in their own research settings.