JIANG Li-na,YING Liu-hua.China University of Politics Science and Law, Beijing, 100088

  【Abstract】 Studies of eyewitness testimony have important meanings. For the most part, this article introduces the factors that affect eyewitness identification accuracy, namely estimator variables and system variables, and analyzes the problems in eyewitness identification researches.

  【Key Words】 Eyewitness, Identification, Estimator variables, System variables