Jon Baron

Founder & President, Coalition for Evidence-Based Policy. Fmr candidate for MD governor, Evidence VP @Arnold_Ventures, Chair of Nat'l Bd for Education Sciences.

[Jon Baron @JonBaronforMD]

I’m excited to announce the launch of No-Spin Evidence Review - a new online publication of the Coalition for Evidence-Based Policy. We summarize recent program evaluations & explain what the evidence really shows. See example below & check out No-Spin at https://t.co/TqolOtZgUY.

[Jon Baron @JonBaronforMD]

7/ Here's our No-Spin report: https://t.co/DHL8JNrABl. Here's the full paper published in Science: https://t.co/PFiwDkYuxs

[Jon Baron @JonBaronforMD]

New: Our No-Spin report on a Science-published RCT of a "Social Belonging" writing exercise to promote student persistence in college. Despite the abstract's positive portrayal of results, the study found null effects on 1 prespecified hypothesis & doesn't report the other 2.🧵

[Jon Baron @JonBaronforMD]

6/ Such post-hoc findings may provide useful hypotheses for future research but are only preliminary – not reliable – under established standards (FDA, IES), as they could be chance results stemming from the study’s examination of multiple subgroups and analyses.

[Jon Baron @JonBaronforMD]

His remarks were part of a keynote session on the Maryland Partnership at the spring 2026 conference of the Society For Prevention Research.

[Jon Baron @JonBaronforMD]

Check out Gov. Wes Moore's compelling remarks on the Maryland Partnership for Proven Programs—a $40M collaboration between @GovWesMoore, @Arnold_Ventures, & Coalition for Evidence-Based Policy to expand programs with strong evidence of meaningful improvements in people's lives.

[Jon Baron @JonBaronforMD]

5/ Such post-hoc findings are considered exploratory - i.e., suggestive but not yet reliable - under established standards (IES, FDA). Here's our No-Spin report: https://t.co/g4begooRyL. Here's the published paper: https://t.co/SJn03K8wds

[Jon Baron @JonBaronforMD]

New: Our No-Spin report on an RCT of Bernie's Book Bank, published in PNAS. The study reports positive impacts on reading, but these results are based on a post-hoc subgroup analysis. The primary findings aren't reported, preventing reliable conclusions about program impact.🧵

[Jon Baron @JonBaronforMD]

4/ The study instead reports positive results of a post-hoc (not prespecified) analysis, that focused on the subgroup of students in grades 1 & 2 at study entry & made other key departures from the prespecified analysis.

[Jon Baron @JonBaronforMD]

8/ Disclosure: Arnold Ventures, which funds No-Spin Evidence Review, helped fund the CEO program as part of this study. Here's our No-Spin report: https://t.co/koF8WXsEsL. Here's the full study report from Mike Puma Associates: https://t.co/rqUTeUQ1iO

[Jon Baron @JonBaronforMD]

New: Our No-Spin report on an RCT of Center for Employment Opportunities (CEO)'s Transitional Jobs Program for High-Risk Male Parolees. In brief: This well-conducted RCT found no effects on reincarceration over ~22 months or employment at the 1 year mark.🧵

[Jon Baron @JonBaronforMD]

7/ Although the study report was finalized in 2017 and briefly summarized and cited in a 2020 publication of the U.S. Department of Labor (DOL), we only recently obtained the full unpublished report from the study author, enabling us to review it for No-Spin.