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Cognitive heuristics, or mental shortcuts, sometimes give rise to biases that can influence decision making. These biases may be particularly impactful in a legal context where decision making has lifelong consequences. One such legal decision falls upon social workers who are often tasked with providing custodial recommendations in child custody cases. Across a series of 2 studies, I explored the role of confirmation bias in social worker decision making, the potential value of blinding to reduce bias, as well as social workers’ perceptions of their own biases. Social workers were given detailed case materials describing a custody case between the state and a father. Participants were randomly assigned to read a previous examiner’s positive evaluation of a father, a negative evaluation of the father, or were blinded to a previous examiners rating. Social workers engaged in confirmation bias, such that those who read a positive evaluation of the father viewed him more positively than participants who read a negative evaluation of the father, despite the fact that all of the actual case evidence remained constant. Blinding did not appear to mitigate the bias. In study 2, social workers viewed themselves as less biased than their peers and less biased than other experts in a different field – signifying the presence of a bias blindspot. Together, my findings suggest the need to further explore how bias might affect judgments and also how to mitigate biases, such as making experts aware of their potential for bias.
ContributorsDenne, Emily (Author) / Neal, Tess M.S. (Thesis advisor) / Stolzenberg, Stacia N. (Committee member) / Fabricius, William (Committee member) / Arizona State University (Publisher)
Created2021