几百年前，当法医科学还没有在警察调查中得到确立的应用时，目击者的证词是收集犯罪事实的首选方法。 如今，目击者的证词并不可靠，原因有很多，其中一个原因是警察可能有意或无意地将目击者引向某个嫌疑人。 刑事排查程序 需要在调查人员中鼓励诚实和彻底的视觉描述程序。
为此，众议院于2012年5月1日通过了一项法案，改变警察在刑事排队时的行为，以提高目击者的可靠性。 该法案是基于对如何改善刑事排队过程的科学研究。
在典型的罪犯列队过程中，无论是用单向镜还是用照片书，嫌疑人与 "填充物 "一起呈现给目击者。
为了提高目击者的可靠性，我们做了一些科学研究。 这些修改包括使用顺序阵容，即目击者一次看一张照片。 这使目击者错误识别的次数减少了22%。
此时，该法案将由参议院审查。
See_also: 圣瓦伦丁日大屠杀 - 犯罪信息| See_also: 吉妮-琼斯 ，女性连环杀手 ，犯罪图书馆-犯罪信息 |
John Williams is a seasoned artist, writer, and art educator. He earned his Bachelor of Fine Arts degree from Pratt Institute in New York City and later pursued his Master of Fine Arts degree at Yale University. For over a decade, he has taught art to students of all ages in various educational settings. Williams has exhibited his artwork in galleries across the United States and has received several awards and grants for his creative work. In addition to his artistic pursuits, Williams also writes about art-related topics and teaches workshops on art history and theory. He is passionate about encouraging others to express themselves through art and believes that everyone has the capacity for creativity.