Behavioral Research Methods 3 (BRM3) starts where BRM2 stopped. We consider how to deal with data in several more sophisticated ways, and add effect size analysis, factor analysis, logistic regression, and multi-level analysis to our data-analytical repertoire. By then, you will be so proficient in data analysis that it is necessary toexplicitly consider the ethical boundaries of data analysis, data reporting, and psychological experimenting. Be the data-master!