Hey there! 👋
I'm a Student Research Assistant at the
Chair of Comparative Political Behavior
in the
Department of Social Sciences
at
Humboldt University of Berlin
and I occasionally do some freelance work processing data for
scientific purposes. I'm currently enrolled as a graduate student of
social sciences at
Humboldt University of Berlin, having completed my Bachelor of Arts there.
What draws me is the politics of intergroup relations, which I study
with causal inference designs, mostly on large-scale behavioral
data. At the
Humboldt Governance Lab, I contribute to ongoing projects as an Affiliated Student
Researcher. As a student member, I support the
European Political Science Society.
Outside of academia, I serve as a volunteer lay judge at the
Berlin Regional Court I. I'm also affiliated with the
regional lay judges association
and a supporting member of both the
Python Software Foundation
and
The R Foundation.
Prior to all of this, I completed a vocational training program in
real estate management and worked for municipal companies involved
in social housing. Afterwards, I worked as a C‑level executive
assistant at the intersection of nature conservation and the energy
transition for about five years.
I'm always happy to connect—feel free to get in touch to discuss
ideas, collaborations, or shared interests. If you'd like, you can
find my PGP public key for secure email communication
here.
Publications
-
Riaz, Sascha,
Maurice Baudet von Gersdorff, and
Heike Klüver (2026): Temperature and Aggression Revisited:
Evidence from 1 Million Amateur Football Matches. In:
PNAS Nexus 5 (6), pgag202. doi:10.1093/pnasnexus/pgag202.
[Abstract]
A large body of research documents a positive relationship
between temperature and human aggression, underpinning
projections of increased conflict in a warming climate.
However, most prior evidence relies on laboratory experiments
with convenience samples or on crime records, both of which
are limited in their generalizability to everyday social
interactions. To isolate the effect of temperature in a
standardized, real-world social environment, we analyze
~1 million amateur football matches played across Germany
and study aggression among more than one million amateur
players. Comparing matches played at the same venue within the
same league and season, and adjusting for referee and team
differences, we find a precisely estimated inverted-U
relationship between temperature and player aggression:
disciplinary cards (issued by referees for fouls and
misconduct) increase with temperature up to
~13°C
but decline thereafter. Matches played under extreme heat show
a 15% reduction in disciplinary actions relative to the sample
mean. Our results contribute to the temperature–aggression
literature: in line with affect-based accounts of aggression,
moderate warmth may increase irritability and arousal;
however, to the extent that aggressive behavior requires
physical engagement, it may decline at extreme temperatures.
Work in Progress
-
Baudet von Gersdorff, Maurice,
Sascha Riaz, and Heike Klüver: Institutional Oversight and the
Expression of Ethnic Bias.