1947- aging american anderson ann authors babyboomgeneration biography competition employees feldman gary glennd golden govan julián kaywin kinsley leadership life lifechangeevents lowry management matthew maxwelllincoln meaning(psychology) michael museumdirectors museums parkinson'sdisease patients philbin porter psychologicalaspects rub shapiro strategicplanning teitelbaum thelma timothy tinterow trainingof unitedstates values vocationalguidance zugazagoitia