Katzman Jacqueline, Kovera Margaret Bull
Department of Psychology, Graduate Center, City University of New York.
Law Hum Behav. 2024 Oct-Dec;48(5-6):385-397. doi: 10.1037/lhb0000566. Epub 2024 Aug 29.
When an officer places a suspect in an identification procedure and the witness identifies the suspect, it falls on attorneys to make decisions that reflect the strength of that identification. The factor that most affects the strength of identification evidence is the likelihood that the suspect is guilty before being subjected to the procedure, which scholars refer to as the prior probability of guilt. Given large racial disparities in exonerations based on eyewitness misidentifications, the current work examined whether defense attorneys are less sensitive to prior evidence of guilt when the defendant is Black as opposed to White.
We predicted that when the defendant's race was described as White rather than Black, attorneys' judgments would be more sensitive to variations in the evidence that would influence the base rate of guilt. We also predicted that attorneys would rate the case as stronger when the victim's race was described as White rather than Black.
We gave 316 defense attorneys case files (modeled after the New York Police Department's style) that varied the strength of the preidentification evidence (strong vs. weak), the race of the defendant (Black vs. White), and the race of the victim (Black vs. White).
Attorneys made judgments that were sensitive to the base rate of guilt, but self-report measures demonstrated that they did not understand the extent to which the base rate of guilt influences the reliability of eyewitness evidence. Participants also rated the strength of the preidentification evidence as stronger for Black than for White defendants.
Although attorneys are intuitively sensitive to the strength of preidentification evidence, they lack conscious awareness of how a suspect's prior probability of guilt affects likelihood of a mistaken identification, which may have implications for their ability to make race-neutral evaluations of preidentification evidence. (PsycInfo Database Record (c) 2025 APA, all rights reserved).
当一名警官让一名嫌疑人接受身份辨认程序,且证人指认了该嫌疑人时,就需要律师做出反映该指认可信度的决定。最影响身份辨认证据可信度的因素是嫌疑人在接受该程序之前有罪的可能性,学者们将其称为有罪的先验概率。鉴于基于目击证人错误指认的无罪开释存在巨大的种族差异,当前的研究考察了在被告是黑人而非白人的情况下,辩护律师对有罪的先前证据是否不那么敏感。
我们预测,当被告的种族被描述为白人而非黑人时,律师的判断会对影响有罪基础概率的证据变化更加敏感。我们还预测,当受害者的种族被描述为白人而非黑人时,律师会认为案件更有说服力。
我们给316名辩护律师提供了案件档案(仿照纽约警察局的风格),这些档案在身份辨认前证据的强度(强 vs. 弱)、被告的种族(黑人 vs. 白人)和受害者的种族(黑人 vs. 白人)方面有所不同。
律师们做出的判断对有罪基础概率很敏感,但自我报告测量表明他们并不理解有罪基础概率在多大程度上影响目击证人证据的可靠性。参与者还认为身份辨认前证据对黑人被告的强度比对白人被告更强。
尽管律师凭直觉对身份辨认前证据的强度很敏感,但他们并未有意识地意识到嫌疑人有罪的先验概率如何影响错误指认的可能性,这可能会影响他们对身份辨认前证据进行无种族偏见评估的能力。(PsycInfo数据库记录(c)2025美国心理学会,保留所有权利)