Dr. Raphael Hartmann

Dr. Raphael Hartmann

Dr. Raphael Hartmann

SMiP Cohort 2017

SMiP Advisors: Prof. Dr. Andrea Kiesel, Prof. Dr. Christoph Klauer, Prof. Jeffrey Rouder, Ph.D.

Thesis:  Facilitating the use of and extending the RT-MPT model class

Degree: Dr. rer. nat. (summa cum laude), received from the University of Freiburg in January 2021

First placement: Postdoctoral researcher at the University of Freiburg

  • Research Areas

    • Multinomial Processing Tree Models
    • Item Response Theory
  • Teaching (SMIP)

    • Workshop „Multinomial processing tree models with reaction times“ (together with Karl Christoph Klauer)
  • Publications

    Hartmann, R., Meyer-Grant, C. G., & Klauer, K. C. (in press). An adaptive rejection sampler for sampling from the Wiener diffusion model. Behavior Research Methods.

    Hartmann, R. (2021). Facilitating the Use of and Extending the RT-MPT Model Class (Unpublished doctoral dissertation). University of Freiburg, Freiburg.

    Hartmann, R. & Klauer, K. C. (2021). Partial derivatives for the first-passage time distribution in Wiener diffusion models. Journal of Mathematical Psychology, 103, 102550. https://doi.org/10.1016/j.jmp.2021.102550

    Hartmann, R., Johannsen, L., & Klauer, K.C. (2020). rtmpt: An R package for fitting response-time extended multinomial processing tree models. Behavior Research Methods, 52, 1313–1338. https://doi.org/10.3758/s13428-019-01318-x

    Hartmann, R., & Klauer, K. C. (2020). Extending RT-MPTs to Enable Equal Process Times. Journal of Mathematical Psychology, 96, 102340. https://doi.org/10.1016/j.jmp.2020.102340

  • Talks

    Hartmann, R., Klauer, K. C., & Johannsen, L. (2019, August). Response time extended multinomial processing trees in R [Talk]. 50th Meeting of the European Mathematical Psychology Group (EMPG). Heidelberg, Germany.

    Hartmann, R. (2019, June). Response time extended multinomial processing tree (RT-MPT) models in R [Talk]. 34th IOPS/SMiP Summer Conference. Utrecht, the Netherlands.

  • Posters

    Hartmann, R. (2018, March 11–14). Recovering Rasch model parameters when the true latent traits are not normally distributed: Comparison of Bayesian and likelihood-based approaches [Poster presentation]. 60. Tagung experimentell arbeitender Psychologen, Marburg, Germany.