Greg Ridgeway | |
---|---|
Born | 1973 (age 47–48) |
Nationality | American |
Alma mater | California Polytechnic State University University of Washington |
Awards | Fellow of the American Statistical Association |
Scientific career | |
Fields | Criminology Statistics |
Institutions | National Institute of Justice RAND Corporation University of Pennsylvania |
Thesis | Generalization of boosting algorithms and applications of Bayesian inference for massive datasets |
Doctoral advisors | David Madigan Thomas S. Richardson |
Gregory Kirk Ridgeway (born 1973) is professor of criminology and statistics at the University of Pennsylvania, where he is also chair of the Department of Criminology.
Ridgeway received his B.S. from California Polytechnic State University in 1995 and his M.S. and Ph.D. from the University of Washington in 1997 and 1999, respectively. All three of his degrees are in statistics. [1] His Ph.D. thesis was entitled "Generalization of boosting algorithms and applications of Bayesian inference for massive datasets". [2]
Early in his career, Ridgeway worked at the RAND Corporation, where he served as the director of the Safety and Justice Program from 2009 to 2012, and of the Center for Quality Policing from 2008 to 2012. He later served as the acting director of the National Institute of Justice for 19 months before joining the University of Pennsylvania in August 2014. [1] [3] [4] In January 2021, he was named the co-editor-in-chief of the Journal of Quantitative Criminology . [5]
Ridgeway's research focuses on using statistical techniques to examine aspects of the United States' criminal justice system. These aspects include, but are not limited to, stop-and-frisk in New York City, which, in a 2007 study, he found was racially biased, with blacks and Hispanics being more likely to be frisked, searched, or arrested once stopped (though they were no more likely to be stopped than whites). [6] [7]
Ridgeway is a fellow of the American Statistical Association. [1]
Terry v. Ohio, 392 U.S. 1 (1968), was a landmark decision of the Supreme Court of the United States in which the Court ruled that it is not unconstitutional for American police to "stop and frisk" a person they reasonably suspect to be armed and involved in a crime. Specifically, the decision held that it is not a violation of the Fourth Amendment to the U.S. Constitution's prohibition on unreasonable searches and seizures when a police officer stops a suspect on the street and questions him or her even without probable cause to arrest, so long as the police officer has a reasonable suspicion that the person has committed, is committing, or is about to commit a crime. The Court also ruled that the police officer may perform a quick surface search of the person's outer clothing for weapons if they have reasonable suspicion that the person stopped is "armed and presently dangerous". This reasonable suspicion must be based on "specific and articulable facts", and not merely upon an officer's hunch.
A Terry stop in the United States allows the police to briefly detain a person based on reasonable suspicion of involvement in criminal activity. Reasonable suspicion is a lower standard than probable cause which is needed for arrest. When police stop and search a pedestrian, this is commonly known as a stop and frisk. When police stop an automobile, this is known as a traffic stop. If the police stop a motor vehicle on minor infringements in order to investigate other suspected criminal activity, this is known as a pretextual stop. Additional rules apply to stops that occur on a bus.
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Frisking is a search of a person's outer clothing wherein a person runs their hands along the outer garments of another to detect any concealed weapons or objects.
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