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GLOSSIP v. GROSS BREYER, J., dissenting

for 22 or more hours per day. American Civil Liberties Union (ACLU), A Death Before Dying: Solitary Confine­ ment on Death Row 5 (July 2013) (ACLU Report). This occurs even though the ABA has suggested that death row inmates be housed in conditions similar to the general population, and the United Nations Special Rapporteur on Torture has called for a global ban on solitary confinement longer than 15 days. See id., at 2, 4; ABA Standards for Criminal Justice: Treatment of Prisoners 6 (3d ed. 2011). And it is well documented that such prolonged solitary confinement produces numerous deleterious harms. See, e.g., Haney, Mental Health Issues in Long-Term Solitary and “Supermax” Confinement, 49 Crime & Delinquency 124, 130 (2003) (cataloguing studies finding that solitary confinement can cause prisoners to experience “anxiety, panic, rage, loss of control, paranoia, hallucinations, and self-mutilations,” among many other symptoms); Grassian, Psychiatric Effects of Solitary Confinement, 22 Wash U. J. L. & Policy 325, 331 (2006) (“[E]ven a few days of solitary confinement will predictably shift the [brain’s] electroencephalogram (EEG) pattern toward an abnormal pattern characteristic of stupor and delirium”); accord, In re Medley, 134 U. S. 160, 167–168 (1890); see also Davis v. Ayala, ante, at 1–4 (KENNEDY, J., concurring). The dehumanizing effect of solitary confinement is aggravated by uncertainty as to whether a death sentence will in fact be carried out. In 1890, this Court recognized that, “when a prisoner sentenced by a court to death is confined in the penitentiary awaiting the execution of the sentence, one of the most horrible feelings to which he can be subjected during that time is the uncertainty during the whole of it.” Medley, supra, at 172. The Court was there describing a delay of a mere four weeks. In the past century and a quarter, little has changed in this respect— except for duration. Today we must describe delays meas­ ured, not in weeks, but in decades. Supra, at 18–19.