Mueller, S., Wagner, J., Drewelies, J., Düzel, S., Eibich, P., Specht, J., et al. (2016). Personality development in old age relates to physical health and cognitive performance: Evidence from the Berlin Aging Study II. Journal of Research in Personality, 65, 94-108. doi:10.1016/j.jrp.2016.08.007.