A child's memory is known to degenerate more rapidly than the memory of an adult. Thus, the child's testimony is perishable. A new application of expert witness testimony would be to elicit and preserve the testimony of children to compensate for this limitation on their ability to testify competently. Such expert testimony would maximize the access of the trier of fact to reliable information without usurping its role. Although this expert testimony would enhance the likelihood of obtaining a conviction in a criminal prosecution, it does not unfairly prejudice the accused person. The increased likelihood of conviction may also encourage more offenders to volunteer to take part in treatment as an alternative to incarceration, thereby reducing society's overall costs of managing sexual offenders. 226 references.