James E. Pustejovsky

@jepusto.bsky.social

Statistician interested in meta-analysis, data science, R, special education. Associate Professor at UW Madison. Also @jepusto@fediscience.org https://jepusto.com

For whatever reason I'm not seeing any Odyssey chatter in my feed, so I'm probably just late to the party...but I saw the Odyssey on IMax. It was loud, long, and rather tedious. The dialogue is more wooden than some famous horses you may have heard of...

🚨PSA: Sending me LLM-generated pdfs with "your" questions about my work / requests that I look over "your" new work is not a good way to impress me, persuade me to collaborate with you, or convince me to mentor you. I have enough robots in my life already, thanks very much.

New NBER working paper. We meta-analyze 82 RCTs of low-cost parent programs in 20+ countries. We use data on unwritten RCTs from funder records, RCT registries, author queries, etc. to estimate a model that adjusts for publication bias and characterizes the effect distribution for unwritten studies.

NBER working paper. 

Paper title: Characterizing the File Drawer: Evidence from a Meta-Analysis of Parent-Interventions Around the World

Abstract:  We conduct a meta-analysis of 82 randomized controlled trials across more than 20 countries to estimate the effects of low-cost, remote parental engagement interventions delivered through text messages, phone calls, and apps. We estimate a joint likelihood function that incorporates both written studies and unwritten studies identified through trial registries, funder records, research labs, evidence clearinghouses, and other sources. By also recording sample sizes for unwritten studies, the model estimates the distribution of standard errors, identifies write-up probabilities conditional on significance, and characterizes the file drawer by estimating effect distributions for written \textit{and} unwritten studies. Bias-corrected effects are 0.05 SD for test scores, 0.07 SD for grades, 0.05 SD for attendance, and 0.03 SD for enrollment. In the best-identified domain, test scores, statistically insignificant results are still written up at high rates. We also find that larger studies tend to estimate smaller latent effects, which could indicate that true effects are correlated with study precision, violating a common meta-analysis assumption. In smaller-sample domains, our approach helps identify selection probabilities by anchoring the absolute write-up rates. Finally, we estimate the value of additional RCTs to inform adoption decisions. Any single study estimate is unlikely to dissuade adoption because parent interventions have high marginal value of public funds. Instead, future research is most valuable when it can explain heterogeneity across settings.

Reviewing a manuscript on a topic that I'm very interested in. And concluding that it is mostly (if not wholly) AI slop. Don't know whether to laugh at the ridiculous tone or despair for the future of peer review.

‼️ Postdoc recruitment Want to help build and understand the future of scientific collaboration? We are seeking a postdoc in computational meta‑science. 📍 UF (Gainesville, FL) 💰 $55–60k (1-3 years) 🧠 High intellectual agency 📅 Deadline March 10 Send us your idea. Details attached!

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I have a new paper. We look at ~all stats articles in political science post-2010 & show that 94% have abstracts that claim to reject a null. Only 2% present only null results. This is hard to explain unless the research process has a filter that only lets rejections through.

It must be very hard to publish null results
Publication practices in the social sciences act as a filter that favors statistically significant results over null findings. While the problem of selection on significance (SoS) is well-known in theory, it has been difficult to measure its scope empirically, and it has been challenging to determine how selection varies across contexts. In this article, we use large language models to extract granular and validated data on about 100,000 articles published in over 150 political science journals from 2010 to 2024. We show that fewer than 2% of articles that rely on statistical methods report null-only findings in their abstracts, while over 90% of papers highlight significant results. To put these findings in perspective, we develop and calibrate a simple model of publication bias. Across a range of plausible assumptions, we find that statistically significant results are estimated to be one to two orders of magnitude more likely to enter the published record than null results. Leveraging metadata extracted from individual articles, we show that the pattern of strong SoS holds across subfields, journals, methods, and time periods. However, a few factors such as pre-registration and randomized experiments correlate with greater acceptance of null results. We conclude by discussing implications for the field and the potential of our new dataset for investigating other questions about political science.

Evidence synthesis folks, I have a social sciences research team that wants to include scoping reviews (as well as the usual systematic reviews) in an umbrella review. What do you think about that?