Sacha Epskamp
Associate Professor
Singapore
Summary
👤
Senior🎓
Top SchoolSacha Epskamp is an Associate Professor at the National University of Singapore with 15 years of experience at the intersection of psychological methods, psychometrics, and computational statistics. He built influential R software (including qgraph and semPlot) and has a strong open-source footprint, notably contributing back-end statistical engine work to the widely used JASP desktop for Bayesian and frequentist analysis. His research pioneered network psychometrics—recasting psychological constructs as interacting systems—and has driven methodological advances in dynamic modeling and adaptive testing. He has held editorial roles at leading journals and led a research centre on urban mental health, demonstrating an unusual blend of theoretical rigor, software engineering, and applied public-health focus. Comfortable moving between R-package development, SEM/SEM visualization, and large-scale data analysis, he brings reproducible, production-ready tools to complex psychological questions. Colleagues describe him as a rare scholar-engineer who turns methodological innovation into widely adopted, usable software.
15 years of coding experience
8 years of employment as a software developer
High School, High School at Erfgooiers CollegeMaster's Degree, Psychology (two year research master programme), Cum Laude, Master's Degree, Psychology (two year research master programme), Cum Laude at University of AmsterdamElementary School, Elementary School at Gouden Kraal
Stackoverflow
46,971reputation
7.0mreached
270answers
44questions
unix
top-5%
sed
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package
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awk
top-5%
dataframe
top-1%
image
top-5%
Github Skills (30)
r10
formatting10
statistics10
forloop10
dataframe10
igraph10
subset10
image9
unix9
awk9
c-language9
matrix9
plot9
windows9
package9
Programming languages (2)
Github contributions (5)
jasp-stats/jasp-desktop
Dec 2013 - Apr 2017
JASP aims to be a complete statistical package for both Bayesian and Frequentist statistical methods, that is easy to use and familiar to users of SPSS
Role in this project:
Back-end Developer
Back-end DeveloperContributions:6 commits, 4 PRs, 16 comments in 3 years 4 months
Contributions summary:Sacha contributed significantly to the back-end functionality of the JASP-desktop project. Their work included implementing and modifying core components within the R engine and related files for statistical analysis. They focused on refactoring and improving the Structural Equation Modeling (SEM) implementation, adding new features, and refining existing code related to the generation of statistical outputs. The user also appears to have addressed cross-compatibility issues to support an older version of GCC.
statisticsfreesoftwarestatisticalaimsstatistical-methods
SachaEpskamp/mlVAR
Oct 2014 - Mar 2022
Contributions:37 commits, 5 PRs, 76 pushes in 7 years 6 months
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