Common Factors in Wrongful Convictions

And Solutions to Address Them

Suppressed

evidence

Open-file discovery rules, already proposed in Pennsylvania, would require prosecutors to turn over all evidence, not just what they deem material. Experts also highlight the need for prosecutorial oversight and a functional disciplinary system.

95%

of the Philadelphia DA’s Conviction Integrity Unit’s first 21 exonerations

Experts say simple measures by police departments can minimize false eyewitness IDs. Those include “double-blind” administration of photo arrays, obtaining an immediate statement of the degree of confidence in any identification, and avoiding “show-up” identifications of a single suspect. Philly police adopted many of these practices in 2014, but there is no state law enforcing best practices.

Eyewitness

misidentification

69%

of the first 375 DNA exonerations nationally, according to the Innocence Project

Misuse of forensic

evidence

In response to discredited science, legislators in some states have eliminated the time limit for introducing new evidence, while Texas passed a law specifically allowing for post-conviction review based on evolving forensic science.

43%

of the first 375 DNA exonerations, according to the Innocence Project

Experts say there are numerous steps lawmakers and police can take to reduce the risk of false confessions: Limit the length of interrogation. Videotape interrogations from start to finish, enabling expert and defense review. Ban deception, a factor in almost all false-confession cases. And, move away from accusatory investigation methods to an information-gathering model.

False

confessions

29%

of the first 375 DNA exonerations, according to the Innocence Project

Several states have established databases in order to track serial snitches, required judges to assess the credibility of an informant before trial, or banned the use of jailhouse informants altogether.

Jailhouse

informants

17%

of the first 375 DNA exonerations, according to the Innocence Project

SAMANTHA MELAMED and JOHN DUCHNESKIE / Staff

Common Factors in Wrongful Convictions

And Solutions to Address Them

Suppressed evidence

of the Philadelphia DA’s Conviction Integrity Unit’s first 21 exonerations

95%

Open-file discovery rules, already proposed in Pennsylvania, would require prosecutors to turn over all evidence, not just what they deem material. Experts also highlight the need for prosecutorial oversight and a functional disciplinary system.

Eyewitness misidentification

69%

of the first 375 DNA exonerations nationally, according to the Innocence Project

Experts say simple measures by police departments can minimize false eyewitness IDs. Those include “double-blind” administration of photo arrays, obtaining an immediate statement of the degree of confidence in any identification, and avoiding “show-up” identifications of a single suspect. Philly police adopted many of these practices in 2014, but there is no state law enforcing best practices.

Misuse of forensic evidence

43%

of the first 375 DNA exonerations, according to the Innocence Project

In response to discredited science, legislators in some states have eliminated the time limit for introducing new evidence, while Texas passed a law specifically allowing for post-conviction review based on evolving forensic science.

False confessions

29%

of the first 375 DNA exonerations, according to the Innocence Project

Experts say there are numerous steps lawmakers and police can take to reduce the risk of false confessions: Limit the length of interrogation. Videotape interrogations from start to finish, enabling expert and defense review. Ban deception, a factor in almost all false-confession cases. And, move away from accusatory investigation methods to an information-gathering model.

Jailhouse informants

17%

of the first 375 DNA exonerations, according to the Innocence Project

Several states have established databases in order to track serial snitches, required judges to assess the credibility of an informant before trial, or banned the use of jailhouse informants altogether.

Common Factors in

Wrongful Convictions and

Solutions to Address Them

Suppressed evidence

of the Philadelphia DA’s Conviction Integrity Unit’s first 21 exonerations

95%

Open-file discovery rules, already proposed in Pennsylvania, would require prosecutors to turn over all evidence, not just what they deem material. Experts also highlight the need for prosecutorial oversight and a functional disciplinary system.

Eyewitness misidentification

69%

of the first 375 DNA exonerations nationally, according to the Innocence Project

Experts say simple measures by police departments can minimize false eyewitness IDs. Those include “double-blind” administration of photo arrays, obtaining an immediate statement of the degree of confidence in any identification, and avoiding “show-up” identifications of a single suspect. Philly police adopted many of these practices in 2014, but there is no state law enforcing best practices.

Misuse of forensic evidence

43%

of the first 375 DNA exonerations, according to the Innocence Project

In response to discredited science, legislators in some states have eliminated the time limit for introducing new evidence, while Texas passed a law specifically allowing for post-conviction review based on evolving forensic science.

False confessions

29%

of the first 375 DNA exonerations, according to the Innocence Project

Experts say there are numerous steps lawmakers and police can take to reduce the risk of false confessions: Limit the length of interrogation. Videotape interrogations from start to finish, enabling expert and defense review.

Ban deception, a factor in almost all false-confession cases. And, move away from accusatory investigation methods to an information-gathering model.

Jailhouse informants

17%

of the first 375 DNA exonerations, according to the Innocence Project

Several states have established databases in order to track serial snitches, required judges to assess the credibility of an informant before trial, or banned the use of jailhouse informants altogether.

SAMANTHA MELAMED and JOHN DUCHNESKIE / Staff