What we found was that much of the association between the two variables (spanking and behavior) was attributable to genetic effects that they had in common. The correlation between spanking and behavior appeared to reflect the presence of shared genetic influences cutting across both traits.
The police had confiscated a simple gold cross that a woman wore around her neck after pulling her over for a minor traffic violation. No contraband was reported, no criminal charges were filed, and no traffic ticket was issued. That’s how it went in dozens more cases involving cash, cars, and jewelry. A number of files contained slips of paper of a sort he’d never seen before. These were roadside property waivers, improvised by the district attorney, which threatened criminal charges unless drivers agreed to hand over valuables.
Whether this should be the law—whether, in the absence of a judicial finding of guilt, the state should be able to take possession of your property—has been debated since before American independence. In the Colonial period, the English Crown issued “writs of assistance” that permitted customs officials to enter homes or vessels and seize whatever they deemed contraband. As the legal scholars Eric Blumenson and Eva Nilsen have noted, these writs were “among the key grievances that triggered the American Revolution.” The new nation’s Bill of Rights would expressly forbid “unreasonable searches and seizures” and promise that no one would be deprived of “life, liberty, or property, without due process.”