Dr. Manuel Voelkle is a professor at Humboldt University of Berlin. He received Dr. rer. soc. (PhD) in Psychology in 2008, at Mannheim university. His research interests lies in Multivariate research methods, Longitudinal data analysis, Inter- and intraindividual variability in cognitive and affective functioning, Evaluation research. At ISM University of Management and Economics dr. Manuel Voelkle teaches a doctoral course on Quantitative Research Methods: Multivariate Statistics.