Before, I worked as postdoctoral researcher at the Media and Personality Lab (Gabriella Harari) at the Department of Communication at Stanford University and at the Department of Psychology at the Ludwig-Maximilians-Universität München (Markus Bühner).
My work is focused on the investigation of human behavior, individual differences, and life outcomes by methods from the computational and social sciences. I use machine learning and computational modeling to describe, explain, and predict human behavior and psychological characteristics.
I am interested in how computational methods and AI can be used to improve and facilitate people's lives, how human-computer interaction can be improved by considering individual differences, and what consequences the widespread (and unreflected) use of computational systems can have on individuals and society at large.
News & Updates
Invited Talk at the Center for Social Data Science - SODAS
02.06.2023 , Copenhagen, DK, EU
It was super interesting to present my work at the Copenhagen Center for Social Data Science (SODAS) and to discuss with the team.
Keynote at the 4th Symposium on Big Data and Research Syntheses in Psychology with a special focus on Machine Learning & Open Science
09.05.2023 , Online
I gave my first keynote at this very nice boutique conference in Frankfurt.
Invited Talk at the University of Zurich
01.11.2022 , Zurich, Switzerland
I was glad to present my groups work on personality prediction at Wiebke Bleidorn's group at the department of psychology at the University of Zurich.
Inaugural Lecture at HSG
04.10.2022 , St. Gallen, Switzerland
Finally, I was able to give an inaugural lecture at the University of St. Gallen (in German).
Talk at European Conference of Personality (ECP)
15.07.2022, Madrid, Spain, EU
On the last day of ECP20, I presented latest results from our ongoing research project on behavioral sequences and the predictability of digital daily behaviors.
Visiting Research Stay at the University of Bergen and talk at the Bergen Future Week at Media City Bergen
15.07.2022, Bergen, Norway
I was invited to spend a month of my time as a visiting researcher at the University of Bergen, hosted by Marija Slavkovic.
During my time in Bergen, I also had the opportunity to give a very short talk about smartphones and personality traits at Media City Bergen. Such a cool and modern venue in such an old and historic city.
Invited Talk at the Natural Science Museum in Berlin
22.04.2022, Berlin, Germany, EU
I was quite an experience to talk about my research in the at the Museum für Naturkunde at Berlin.
The video was created and provided to me by a kind visitor, unfortunately it is very low quality :(.
19.02.2022, Online/San Francisco, CA, USA
I gave a talk on how daily behaviors can be represented as temporal sequences.
SPSP 2021 Convention
I am exited that I will be giving a talk on talk on explainable machine learning for mobile personality sensing at SPSP pre-conference on the Psychology of Media and Technology.
I will also give another talk on explainable machine learning in the professional development session New Developments in Psychological Assessment and How to Use Them,organized by Sandra Matz (Columbia Business School) and Friedrich Götz (Cambridge University).
Invited talk at the University of Regensburg
17.12.2020, Online/Regensburg, DE, EU
I gave an invited talk on mobile sensing in educational research in the colloquium of Prof. Sven Hilbert, at the University of Regensburg.
Invited talk at the University of Hamburg
15.12.2020, Online/Hamburg, DE, EU
I gave an invited talk on mobile sensing in personality psychology in the colloquium of Prof. Jenny Wagner, at the University of Hamburg.
Our work featured in FORBES
USC - Summer School
04.08.2020, Online/Santa Barbara, CA, USA
I will be giving a talk on the predictiveness of behavioral smartphone data for personality traits, at the USC - summer school on Sensor-Based Behavioral Machine Learning
Our Research on Personality Prediction from Daily Behavior was published in PNAS
Stachl, C., Au, Q., Schoedel, R., Samuel. D. Gosling, Gabriella. M. Harari., Buschek, D., Völkel, S., Schuwerk, T., . . . Bühner, M. (2020). Predicting Personality from Patterns of Behavior Collected with Smartphones. Proceedings of the National Academy of Sciences of the United States of America (PNAS). https://doi.org/10.1073/pnas.1920484117
New articles out
Stachl, C., Pargent, F., Hilbert, S., Harari, G. M., Schoedel, R., Vaid, S., … Bühner, M. (2020). Personality Research and Assessment in the Era of Machine Learning. European Journal of Personality, per.2257. https://doi.org/10.1002/per.2257
Schoedel, R., Pargent, F., Au, Q., Völkel, S. T., Schuwerk, T., Bühner, M., & Stachl, C. (2020). To Challenge the Morning Lark and the Night Owl: Using Smartphone Sensing Data to Investigate Day–Night Behaviour Patterns. European Journal of Personality, per.2258. https://doi.org/10.1002/per.2258
Völkel, S. T., Schödel, R., Buschek, D., Stachl, C., Winterhalter, V., Bühner, M., & Hussmann, H. (2020). Developing a Personality Model for Speech-based Conversational Agents Using the Psycholexical Approach. Proceedings of the 2020 CHI Conference on Human Factors in Computing Systems, 1–14. https://doi.org/10.1145/3313831.3376210
27.02.2020, New Orleans, LA, USA
I am organizing a symposium on "Big Data, Machine Learning and Mobile Sensing - New Directions in Personality Research", featuring Ramona Schödel (LMU-Munich, Psychology) and Poruz Khambatta (Stanford Business School).
30.09.2019 - 02.10.2019
Uni-Saarland, Saarbrücken, Germany.
. 30.09.2019. I will give a talk on the importance of interpretable machine learning for research and assessment in psychology.
02.10.2019, 18:30h. I will be participating in a panel discussion on explainable AI.
DPPD 2019, Dresden, Germany
14.09. - 18.09.2019
15.09.2019, 9:00-17h. Prior to the DPPD20199 conference, Ramona Schödel and I will provide "An Introduction to Machine Learning for Psychologists in R" in a preconference workshop. More infos are provided via this OSF-repository.
16.09.2019. For my work on the usage of smartphones for personality research and assessment, I was awarded with the "Award for Digital Assessment" by the Division for Personality and Psychological Assessment of the German Psychological Society (DGPS).
17.09.2019, 11:00h. I will be giving a presentation on "Machine Learning for Personality Assessment" at Le Vy Phan's symposium on Challenges in and Approaches to Behavioral Assessment & Prediction.
Presentation at the ECDP Big Data special event in Athens.
Together with Sabine Walper, I will talk about the potential of mobile sensing methods for continous high-frequent data collection in developmental psychology.
Presentation at the DPPD Post-Doc workshop at the GESIS institute in Mannheim.
I will present results from our teams latest study on the prediction of big five personality traits from a wide range of smartphone-sensed behaviors.
Presentation at the 1st workshop on mobile apps and sensors in surveys (MASS) at the University of Mannheim.
I will introduce the LMU-PhoneStudy mobile-sensing research system and presents how data from mobiles sensors can be used cojointly with classical measures from surveys.
Presentation at the 2019 SPSP Annual Convention.
I will give a(n) (unfortunately remotely) talk on the predictability of personality traits from every-day smartphone usage in the symposium "Using RealWorld Behavioral Data to Advance Psychological Research and Theory", chaired by Christine Anderl,
16.09. - 20.09.2018
Prior to the DGPS2018 conference, Florian Pargent and I will provide "An Introduction to Machine Learning for Psychologists in R" in a preconference workshop. More infos will be provided via this OSF-repository.
I'll be chairing a prediction-focused symposium ( "Predictions in Psychology - Behavior, Personality, Emotions, Performance, Places and Person-Culture Fit") at the DGPS2018 in Frankfurt, Germany.
Prof. Dr. Markus Bühner and I will discuss "Psychological Diagnostics in the Era of Machine Learning" in the invited symposium "Big Data: The new Big Promise for research in applied psychology?", chaired by Cornelius König.
Sandrine Müller and I be will co-chairing a symposium titled "Physical manifestations of psychological characteristics" at the APS - Convention in San Francisco. I will present my groups work on the prediction of individual personality traits from smartphone data with a focus on geo-location based features.