Andrea was asked to be an expert witness in a case with a su…

Andrea was asked to be an expert witness in a case with a suspected biased lineup. When conducting a mock witness evaluation of this lineup, she showed the six-person lineup and the witness’s description of the suspect to 24 mock witnesses. About how many mock witnesses can be expected to pick out the suspect without it being a biased lineup?

During a pretrial hearing, a defense attorney argues that th…

During a pretrial hearing, a defense attorney argues that the forensic identification evidence the prosecution intends to present lacks scientific validity. They ask the judge to exclude it or explain its limitations to jurors. As a forensic scientist, how do you expect the judge to rule?