Summary of Argument
Custody, for Miranda purposes, has always been assessed through an objective standard that looks to the circumstances of the interrogation but does not take into account personal characteristics of the interviewee even if those characteristics might impact the person’s subjective perception of his freedom. Subjective factors such as experience and intelligence are often unknown to police officers. Regardless, police are ill-equipped to make snap assessments as to how age (or other factors that cannot be meaningfully distinguished from age) will impact a person’s belief that he is free to leave.
Age is not an effective proxy for assessing custody because it is shorthand for these other subjective matters that are supposed to be irrelevant to the analysis. A situation that is objectively noncustodial does not become custodial simply because the age of the subject changes. Moreover, age does not need to be used as a proxy for location in juvenile-police interactions that occur at school. The location of the interrogation is a factor that is considered in the custody analysis; thus, the school environment properly may be considered in the custody analysis without regard to consideration of age.
Age and maturity are already facts relevant in assessing the voluntariness of a statement, and courts are better suited to examine subjective considerations in the voluntariness context. Many states provide additional protections for juveniles subjected to interrogation, but those protections almost uniformly only apply to juveniles who are clearly in custody. The existence of these protections is irrelevant to assessing whether the juvenile is in custody, and states generally have not enacted measures defining custodial status based on age. Expanding Miranda custody to subsume subjective considerations that are already accounted for by the voluntariness analysis will thus result in additional confusion for police officers and costs to society without resulting in any offsetting benefit to society.