renic patients spent hours pressing their switches with beatifically expectant smiles. It was after several months of cat experiments that Professor Heath suggested that we spend some time interviewing a hospitalized, chronically ill female patient, Donna, before and during the time she was being studie

also have concurrent jurisdiction over the same crime, enabling one to assess the adequacy of the other's enforcement effort. For a rare example, see Heath v. Alabama, 474 U.S. 82, 91-93 (1985). 35. See U.S. Const. amend. V (Double Jeopardy Clause); Bartkus v. Illinois, 359 U.S. 121, 136-39 (1959) (affi