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Today @PNASNews published one of the most important studies I've conducted. We asked: do international treaties produce the effects their negotiators intended? The short answer is "no".
Here I will try to summarize almost 10 years of work in 10 tweets.🧵 pnas.org/doi/full/10.10…
Here I will try to summarize almost 10 years of work in 10 tweets.🧵 pnas.org/doi/full/10.10…
1. To start, treaties are often used by countries to address issues that transcend national boundaries, like the environment, human rights, humanitarian crises, maritime issues, security and trade. Today there are at least 250,000 treaties, yet few have been evaluated for impact.
2. So we conducted a systematic field-wide evidence synthesis. We searched 11 databases, combed through 24,096 records, and found 224 quantitative impact evaluations of treaties. We then used statistical techniques to integrate all unique quantitative estimates of effects. 
