George Vallas has posted A Survey of Federal and State Standards for the Admission of Expert Testimony on the Reliability of Eyewitnesses (American Journal of Criminal Law, Vol. 39, No. 1, Fall 2011) on SSRN. Here is the abstract:

Eyewitness testimony is indispensable to the proper functioning of the criminal justice system. However, as Justice Frankfurter famously observed: “The vagaries of eyewitness identification are well-known; the annals of criminal law are rife with instances of mistaken identification.” Social scientists, legal commentators, and even courts have long been skeptical of eyewitness testimony. Developments in forensic testing have established beyond any doubt that eyewitness testimony has the potential to be dangerously unreliable, and eyewitness misidentification remains the leading cause of false convictions in the United States.