A Checkpoint Effect? Evidence from a Natural Experiment on Travel Restrictions in the West Bank

Does nonviolent repression prompt subject groups to obey or rebel? By what mechanism does it do so? To address these questions, we exploit a natural experiment based on a 2009 policy toward the “easement” of checkpoints—nonviolent impediments to movement—in the West Bank. We sample populations across 17 villages (n = 599), beside one checkpoint slated for easement (treatment) and one that will undergo no change (control), before and after the intervention. We then pursue difference‐in‐difference estimation. This design is experimental, as easement was orthogonal to Palestinian attitudes; for robustness, we test our findings against an independent panel (n = 1,200). We find that easement makes subject populations less likely to support violence; we suggest humiliation as the mechanism bridging nonviolent repression with militancy. This warrants rethinking Israeli security policy, as short‐term concerns over Palestinian mobility may be compromising Israel's long‐term interests. By extension, checkpoint easement may positively affect peace negotiations.     

The temporal fate of drugs in decomposing porcine tissue

Drug levels in decomposed individuals are difficult to interpret. Concentrations of 16 drugs were monitored in tissues (blood, brain, liver, kidney, muscle, and soil) from decomposing pigs for 1 week. Pigs were divided into groups (n = 5) with each group receiving four drugs. Drug cocktails were prepared from pharmaceutical formulations. Intracardiac pentobarbital sacrifice was 4 h after dosing, with tissue collection at 4, 24, 48, 96, and 168 h postdosing. Samples were frozen until assay. Detection and quantitation of drugs were through solid phase extraction followed by gas chromatograph/mass spectrometer analysis. Brain and kidneys were not available after 48 h; liver and muscle persisted for 1 week. Concentration of drugs increased during decomposition. During 1 week of decomposition, muscle showed average levels increasing but concentrations in liver were increased many fold, compared to muscle. Attempting to interpret drug levels in decomposed bodies may lead to incorrect conclusions about cause and manner of death.