Manfred Diehl Author & Editor

Manfred Diehl is professor of Human Development and Family Studies at Colorado State University. Karen Hooker is the Jo Anne Leonard Petersen Chair in Gerontology and Family Studies, and Professor and Co-Director of the School of Social and Behavioral Health Sciences at Oregon State University.　 Martin J. Sliwinski is professor of Human Development and Family Studies and Director of the Center for Healthy Aging at Pennsylvania State University.