Authors’ Response to Kaufman and Muntaner

Authors’ Response to Kaufman and Muntaner Rosalind Arden,* Michelle Luciano, Ian J. Deary, Chandra A. Reynolds, Nancy L. Pedersen, Brenda L. Plassman, Matt McGue, Kaare Christensen and Peter M. Visscher Centre for Philosophy of Natural and Social Science, London School of Economics, London, UK, Centre for Cognitive Ageing and Cognitive Epidemiology, Department of Psychology, University of Edinburgh, Edinburgh, UK, Department of Psychology, University of California, Riverside, CA, USA, Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden, Department of Psychiatry and Behavioral Sciences, Duke University Medical Center, Durham, NC, USA, DepartmentofPsychology, University of Minnesota, Minneapolis, MN, USA, DanishAging Research Center, University of Southern Denmark, Odense, Denmark and Queensland Brain Institute, University of Queensland Diamantina Institute, Woolloongabba, QLD, Australia