AdaptationfrominvisibleflickerSherifShady,DonaldI.A.MacLeod*,andHeidiS.FisherDepartmentofPsychology,UniversityofCaliforniaatSanDiego,9500GilmanDrive,MC0109,LaJolla,CA92037EditedbyDalePurves,DukeUniversityMedicalCenter,Durham,NC,andapprovedJanuary27,2004(r
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