PPS has been selected as one of four disabling conditions that effect aging in a study, conducted by the University of Washington and K. Warner Schaie. Schaie agreed to present findings from his exhaustive study on aging at last year's Washington State Psychology Association conference, but only if he could bring 26 guests. They ranged from 74 to 101 years old and had stuck with him for a half-century.  They were a handful of the 500 subjects who enrolled in the first year of the Seattle Longitudinal Study in 1956 (for complete article click the Seattle Times. Pay special attention to the sidebar.). . .