Martin E. P. Seligman, Learned Optimism: How to Change Your Mind and Your Life (New York: Vintage Books, 2006), 7, 8.
98
Seligman and Schulman, “Explanatory Style,” 834–35.
99
Ibid., 835.
100
Seligman, Learned Optimism, 292.
101
Alicia H. Munnell, Anthony Webb, Luke Delorme, and Francesca Golub-Saas, “National Retirement Risk Index: How Much Longer Do We Need to Work?” Center for Retirement Research Report, no. 12–12 (June 2012); Teresa Ghilarducci, “Our Ridiculous Approach to Retirement,” New York Times, July 21, 2012.
