Ruprecht-Karls-Universitšt Heidelberg

Ulf Mertens, M.Sc.

Ulf Mertens

Ulf Mertens

Universität Heidelberg
Psychologisches Institut
Hauptstrasse 47-51
D-69117 Heidelberg

Room: F023

email: ulf.mertens(at)
Tel: +49-6221-54-7322
Fax: +49-6221/54-7787

I don't have fixed office hours, so just write me a mail or call in order to make an appointment.

My personal blog:

Research interests

  • Adaptive Design Optimization
  • When it comes to hypothesis testing, most effort is put into the phase after an experiment has been conducted. ADO however focuses on the moment the data are collected. When ADO is used for model comparison, it tries to find optimal stimuli on-the-fly. ADO is able to discriminate among models in a much faster way because there are no more wasted trials (trials where all models predict a similar outcome).
  • Linear mixed models
  • Linear mixed models (LMMs) are a popular statistical tool to model hierarchical structures in the data. Especially in psychology, LMMs are often used for the analysis of repeated measurements. I am currently working on a comparison of some well-known methods for such designs including ANOVA, MANOVA and LMMs.
  • Bayesian Statistics
  • I like the way of thinking in Bayesian Statistics. You have some prior knowledge about your parameter of interest, collect some data, and then update you prior belief. Also, I'm not a fan of the p-value is why I sympathise with the Bayesian approach.


  • Übung Deskriptivstatistik
  • An introduction to basic descriptive statistics using the R programming language
  • Übung Inferenzstatistik
  • This is a subsequent course where the focus lies on how to use R for inferential statistics (linear models, contrast analysis etc.)
  • Statistics Toolbox
  • In this class, we show how to tackle some common problems in empirical theses such as dealing with violations of assumptions, missing values, marginally significant results and so on.

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Seitenbearbeiter: Ulf Mertens