Well designed and correctly analysed experiments are very important to answer your research questions of interest as clearly and efficiently as possible. This seminar will teach you on how to calculate sample size and test power, but will also introduce you to common experimental designs. Learning about the correct statistical models for data analysis will be a major topic of this seminar. Fixed effects models and ANOVAs, but also more sophisticated mixed linear models with fixed and random effects will be discussed. You will learn about appropriate R packages and you will compute examples throughout the seminar, including own data sets if you wish.