PORTLAND — The American legal system offers few moments as dramatic as an eyewitness to a crime pointing his finger across a crowded courtroom at a defendant.
The problem is that decades of studies show eyewitness testimony is only right about half the time — a reality that has prompted a small vanguard of police chiefs, courts and lawmakers to toughen laws governing the handling of eyewitnesses and their accounts of crimes.
Reform advocates say procedures long regarded as solid police work, from bringing a witness to a crime scene where he might see a suspect in handcuffs to the subtle encouragement of a detective during a police lineup, can fundamentally alter what someone believes they saw.
“It’s not the case that eyewitnesses are inherently unreliable,” said Gary Wells of Iowa State University, who has researched the field of eyewitness identification since the 1970s. “But we can make it better by cleaning up the procedures around it.”