edited by Sandra Spanier and Robert W. Trogdon. edited by Mark Goldie and Robert Wokler. edited by Karen Leeder and Robert Vilain. edited by David C. Roller and Robert W. Twyman edited by Evelyn Brister and Robert Frodeman. edited by Mary Buckley and Robert Singh. edited by Chris Hunter and Robert Klanten. edited by Ninna Meier and Sue Dopson. edited by Keith J. Holyoak and Robert G. Morrison. edited by David Harper and Andrew R. Thompson.