Ren Liu is an Assistant Professor and Area Head of Quantitative Methods, Measurement, and Statistics at the University of California, Merced. 

Ren's work centers around the development of advanced statistical and measurement methods in the field of behavioral and social sciences. He focuses on psychometric theories and their practical applications in measure development and analysis, with the goal of accurately measuring complex latent traits and providing actionable feedback to stakeholders. 

In addition to his primary research in methodology, Ren is committed to translating innovative methods for applied researchers to promote best practices. He actively collaborates with colleagues on substantive research projects in diverse domains, such as substance use, self-injury, criminal justice, LGBTQ+ groups, patients with ADHD, and children with altruism.