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“活吃青蛙”源自马克·吐温，“每天早上第一件事活吃一只青蛙，那么，这一整天，坏事都不会发生在你身上。”
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226 推迟有助于我们实现目标的活动、任务或决定： Orellana-Damacela, L. E., Tindale, R. S., & Suárez-Balcázar, Y. (2000). Decisional and behavioralprocrastination: How they relate to self-discrepancies. Journal of Social Behavior & Personality, 15(5), 225–238.
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226 导致他们已经无法选择采取哪种治疗方式：Harlan, L. C., Bernstein, A. B., & Kessler, L. G. (1991). Cervical cancer screening: Who is not screened and why? American Journal of Public Health, 81(7), 885–890.
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Jaberi, F. M., Parvizi, J., Haytmanek, C. T., Joshi, A., & Purtill, J. (2008). Procrastination of wound drainage and malnutrition affect the outcome of joint arthroplasty. Clinical Orthopaedics and Related Research, 466(6), 1368–1371.
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Saposnik, G. (2009). Acute stroke management: Avoiding procrastination, the best way to optimize care delivery. European Journal of Neurology, 16(12), 1251–1252.
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Steel, P., & Ferrari, J. (2013). Sex, education and procrastination: An epidemiological study of procrastinators’ characteristics from a global sample. European Journal of Personality, 27(1), 51–58.
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Worthley, D. L., Cole, S. R., Esterman, A., Mehaffey, S., Roosa, N. M., Smith, A., … Young, G. P. (2006). Screening for colorectal cancer by faecal occult blood test: Why people choose to refuse. Internal Medicine Journal, 36(9), 607–610.
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226 退休储蓄计划，直到这一切都已经来不及：Byrne, A., Blake, D., Cairns, A., & Dowd, K. (2006). There’s no time like the present: The cost of delaying retirement saving. Financial Services Review, 15(3), 213–231.
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Venti, S. (2006). Choice, behavior and retirement saving. In G. Clark, A. Munnell & M. Orszag (Eds.), Oxford handbook of pensions and retirement income (Vol. 1, pp. 21— 30). New York, NY: Oxford University Press.
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226 女性更容易比男性从大学毕业：Goldin, C., Katz, L. F., & Kuziemko, I. (2006). The homecoming of American college women: The reversal of the college gender gap. The Journal of Economic Perspectives, 20(4), 133–156.
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Heckman, J. J., & LaFontaine, P. A. (2010). The American high school graduation rate: Trends and levels. The Review of Economics and Statistics, 92(2), 244–262.
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Janosz, M., Archambault, I., Morizot, J., & Pagani, L. S. (2008). School engagement trajectories and their differential predictive relations to dropout. Journal of Social Issues, 64(1), 21–40.
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227 女性更不容易患上拖延症：由于研究中存在太多变量N，这之间的关联度极低，很难具有统计意义。最强的关联也只在拖延症习惯中占1%。
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227 减少人类患拖延症的概率：Kaplan, S., & Berman, M. G. (2010). Directed attention as a common resource for executive functioning and self-regulation. Perspectives on Psychological Science, 5(1), 43–57.
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227 但与此同时也更容易拖延：Rentfrow, P., Gosling, S., & Potter, J. (2008). A theory of the emergence, persistence, and expression of geographic variation in psychological characteristics. Perspectives on Psychological Science, 3(5), 339–369.
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227 一旦大脑前额叶受损：Freeman, W., & Watts, J. W. (1939). An interpretation of the functions of the frontal lobe: Based upon observations in forty-eight cases of prefrontal lobotomy. The Yale Journal of Biology and Medicine, 11(5), 527–539, p. 537.
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Strub, R. L. (1989). Frontal lobe syndrome in a patient with bilateral globus pallidus lesions. Archives of Neurology, 46(9), 1024–1027.
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228 两大潜在因素：Steel, P. (2007). The nature of procrastination: A meta-analytic and theoretical review of quintessential self-regulatory failure. Psychological Bulletin, 133(1), 65.
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Steel, P. (2010). The procrastination equation: How to stop putting things off and start getting stuff done. New York, NY: HarperCollins.
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229 更容易陷入拖延：斯蒂尔构造了一个逆方程，将自信心和完成值放在分子，将完成时间和干扰放在分母，得出了任务完成渴望度。即：
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在此，我向斯蒂尔道歉，为了更间接地解释，我在此省略了换算百分比的其他步骤。
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229 等待完成任务获得积极反馈：来源于方程1， Steel, P., & König, C. J. (2006). Integrating theories of motivation. Academy of Management Review, 31(4), 889–913. 拖延经常表示为 T-t。T代表现在得到的奖励值，t代表未来得到的相同的奖励值。
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229 很难开始启动某个任务：Rabin, L. A., Fogel, J., & Nutter-Upham, K. E. (2011). Academic procrastination in college students: The role of self-reported executive function. Journal of Clinical and Experimental Neuropsychology, 33(3), 344–357.
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230 源于缺乏计划：几乎直接引自Rabin, L. A., Fogel, J., & Nutter-Upham, K. E. (2011). Academic procrastination in college students: The role of self-reported executive function. Journal of Clinical and Experimental Neuropsychology, 33(3), 344–357.