Recently published in Asian Journal of Criminology (2014):
"The Influence of Improper Information on Japanese Lay Judges’ Determination of Punishment"
Eiichiro Watamura
Toshihiro Wakebe
Kaori Karasawa
Lay judges’ decision-making process in the determination of appropriate punishment appears to be based on their assessment of the seriousness of the crime; this indicates that legal sentences are being decided subjectively, which can be problematic. For instance, judgments can sometimes be made on the basis of irrelevant and therefore improper, information. Ideally, such information would be disregarded when considering appropriate punishment in a real court. Thus, the aim of this study was to determine whether information that is irrelevant to a criminal case can influence Japanese lay judges’ determination of an appropriate punishment. Our study used a fictional case study and a questionnaire to assess whether Japanese participants were influenced by exposure to irrelevant information. The results of two experiments consistently showed that irrelevant information distorts the inner subjective balance between the severity of punishment and the seriousness of the crime and may even influence the decision-making process that lay judges engage in when determining offenders’ punishment. We suggest reasons why this influence might affect decision-making and discuss whether the influence of improper information can be consciously disregarded.
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