Law Commons^™

Are Police Officers Bayesians? Police Updating In Investigative Stops, Jeffrey A. Fagan, Lila J.E. Nojima

Faculty Scholarship

Theories of rational behavior assume that actors make decisions where the benefits of their acts exceed their costs or losses. If those expected costs and benefits change over time, behavior will change accordingly as actors learn and internalize the parameters of success and failure. In the context of proactive policing, police stops that achieve any of several goals — constitutional compliance, stops that lead to “good” arrests or summonses, stops that lead to seizures of weapons, drugs, or other contraband, or stops that produce good will and citizen cooperation — should signal to officers the features of a stop that …

Randomization And The Fourth Amendment, Bernard Harcourt, Tracey L. Meares

Faculty Scholarship

Randomized checkpoint searches are generally taken to be the exact antithesis of reasonableness under the Fourth Amendment. In the eyes of most jurists checkpoint searches violate the central requirement of valid Fourth Amendment searches – namely, individualized suspicion. We disagree. In this Article, we contend that randomized searches should serve as the very lodestar of a reasonable search. The notion of "individualized" suspicion is misleading; most suspicion in the modem policing context is group based and not individual specific. Randomized searches by definition are accompanied by a certain level of suspicion. The constitutional issue, we maintain, should not turn on …

Unconstitutional Police Searches And Collective Responsibility, Bernard E. Harcourt

Faculty Scholarship

Then the police officer told the suspect, without just cause, "I bet you are hiding [drugs] under your balls. If you have drugs under your balls, I am going to fuck your balls up."

Jon Gould and Stephen Mastrofski document astonishingly high rates of unconstitutional police searches in their groundbreaking article, "Suspect Searches: Assessing Police Behavior Under the U.S. Constitution." By their conservative estimate, 30% of the 115 police searches they studied – searches that were conducted by officers in a department ranked in the top 20% nationwide, that were systematically observed by trained field observers, and that were coded …

Reappraising T.L.O.'S Special Needs Doctrine In An Era Of School-Law Enforcement Entanglement, Joshua Gupta-Kagan

Faculty Scholarship

This essay presents one doctrinal method for lawyers to defend children accused of criminal charges in juvenile or adult court: attacking the applicability of the nearly twenty-year old case, New Jersey v. T.L.O. to most school searches. T.L.O. established a lower standard for searches of students by school officials, but it explicitly did not decide what standard the government must meet to justify school searches performed by police officers, creating a doctrinal starting point for advocates to raise challenges to searches involving police. More fundamentally, the T.L.O. Court based its decision on the presumption that firm gates separate public school …