1. Department of Psychology, University of Southern California, Los Angeles, CA, USA
2. Davis School of Gerontology, University of Southern California, Los Angeles, CA, USA
3. Department of Psychology, University of Nevada, Las Vegas, Las Vegas, NV, USA
4. Department of Psychology, University of California, Riverside, Riverside, CA, USA
5. Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
6. Center for Economic and Social Research, University of Southern California, Los Angeles, CA, USA