Read the following scenario. Identify at least two procedural errors made by the detective and explain how each could improperly influence the witness's memory and level of certainty.

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According to researchers Gary Wells and Deah Quinlivan, certain police identification methods can improperly influence a witness's memory and confidence. These suggestive procedures include creating lineups where the suspect is noticeably different from the others, directly telling the witness who to identify, or providing positive reinforcement like 'Good choice' after an identification is made. Such actions can artificially inflate a witness's certainty, regardless of the accuracy of their choice.

Suggestive Police Identification Procedures

A blind photo lineup is a police identification procedure designed to prevent suggestive cues. In this method, the officer administering the lineup is unaware of which photograph belongs to the suspect, thereby minimizing the chance of unintentionally influencing the witness's choice.

Blind Photo Lineups

Analysis of a Witness Identification Scenario

The case of Jennifer Thompson and Ronald Cotton illustrates how suggestive police identification procedures can lead to absolute, yet false, certainty in an eyewitness. Thompson's initial uncertainty about her attacker evolved into absolute confidence after suggestive procedures, leading to her compelling testimony that helped wrongfully convict Cotton.

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