1 . 这段亲历者的描述由彼得·莫斯科思（Peter Moskos）的妈妈提供，摘自彼得·莫斯科思2010年的博客。P. Moskos, ‘Crowd stampede at Netherlands WWII ceremony’, Cop in the Hood website (5 May 2010).
2 . N. Christakis, ‘The hidden influence of social networks’, TED talk (May 2010).
3 . 对这个问题的综述请参考T. Gilovich, D. Keltner and R. E. Nisbett, Social Psychology (New York, NY: W. W. Norton, 2006)。
4 . N. A. Christakis and J. H. Fowler, ‘The spread of obesity in a large social network over 32 years’, New England Journal of Medicine , 357:4 (2007), 370–79.
5 . J. H. Fowler, J. E. Settle and N. A. Christakis, ‘Correlated genotypes in friendship networks’, Proceedings of the National Academy of Sciences of the United States of America , 108 (2011), 1993–7.
6 . P. Ekman, ‘Lie catching and micro expressions’, in C. Martin (ed.), The Philosophy of Deception (Oxford: Oxford University Press, 2009).
7 . J. Sundén, Material Virtualities (New York, NY: Peter Lang, 2003), 3.
8 . L. E. Buffardi and W. K. Campbell, ‘Narcissism and social networking web sites’, Personality and Social Psychology Bulletin , 34 (2008), 1303–14.
9 . 这项涉及3 000名英国家长的调查是专门为一档节目的宣传做的。这是BBC“观察”频道的一档真人秀节目，名为《塔兰特把孩子们放出来啦》。关于传统的就业数据来自泰勒·赫林（Taylor Herring）的网站（数据下载于2009年10月6日）。
10 . 摘自2008年3月英国教师与讲师协会的BBC新闻稿。
11 . Nielsen, ‘What Americans do online: Social media and games dominate activity’, Nielsenwire website (2 August 2010).
12 . Nielsen, ‘Nielsen and McKinsey form joint venture to help companies use social media intelligence for superior business performance’, Press release (14 June 2010).
13 . M. Ito et al., Hanging Out, Messing Around and Geeking Out , The John D. and Catherine T. MacArthur Foundation Series on Digital Media and Learning (Cambridge, MA: MIT Press, 2011).
14 . Ofcom, The Communications Market Report United Kingdom: A Nation Addicted to Smartphones (London: Ofcom, 4 August 2011).
15 . R. Epstein, ‘The myth of the teen brain’, Scientific American Mind (April 2007).
16 . M. Gardner and L. Steinberg, ‘Peer influence on risk-taking, risk preference, and risky decision-making in adolescence and adulthood: An experimental study.’ Developmental Psychology , 41 (2005), 625–635.
17 . R. B. Cialdini, R. J. Borden, A. Thorne, M. R., Walker, S. Freeman, and L. R. Sloan, ‘Basking in reflected glory. Three Football Field Studies.’ Journal of Personality and Social Psychology , 34 (1976), 366–375.
18 . K. Quinn, ‘Anonymous online tweets: It's just bullying in 140 letters’, Age (21 February 2011).
19 . F. Swain, ‘Susan Greenfield: Living online is changing our brains’, New Scientist (3 August 2011).
20 . D. Bavelier, C. S. Green and W. G. Dye, ‘Children, wired: For better and for worse’, Neuron , 67 (2010), 692–701.
21 . D. Bishop, ‘An open letter to Baroness Susan Greenfield’, BishopBlog website (4 August 2011); see also T. McVeigh, ‘Research linking autism to internet use is criticised’, Guardian (6August 2011).
22 . J. Cohen, ‘The rise of social media is really a reprise’, in J. Brockman (ed.), Is the Internet Changing the Way You Think? The Net's Impact on Our Minds and Future (New York, NY: Harper Perennial, 2011).
23 . ‘The professor, his wife, and the secret, savage book reviews on Amazon’, Guardian (20 April 2010).
24 . A. Jeffries, ‘A sensor in every chicken: Cisco bets on the internet of things’, Read Write Web website (2010).
25 . d. m. boyd, ‘Streams of content, limited attention: The flow of information through social media’, presentation at ‘Web2.0 Expo’, New York, NY (17 November 2009).
26 . E. Pariser, The Filter Bubble: What the Internet Is Hiding fromYou (NewYork, NY: Penguin, 2011).
27 . A. M. McCright and R. E. Dunlap, ‘The politicization of climate change and polarization in the American public's views of global warming 2001–2010’, Sociological Quarterly , 52 (2011), 155–94.
28 . J. Bollen, B. Gon?alves, G. Ruan and H. Mao, ‘Happiness is assortative in online social networks’, Artificial Life , 17 (2011), 237–51.
29 . M. D. Conover, J. Ratkiewicz, M. Francisco, B. Gon?alves, A. Flammini and F. Menczer, ‘Political polarization on Twitter’, Proceedings of International Conference on Weblogs and Social Media 2011.
30 . B. Gon?alves, N. Perra and A. Alessandro Vespignani, ‘Modeling user activity on Twitter networks: Validation of Dunbar's number’, PLoS ONE , 6:8 (2011): e22656, doi:10.1371/journal.pone.0022656.
31 . S. Baron-Cohen, ‘1000 hours a year’, in J. Brockman (ed.), Is the Internet Changing the Way You Think? The Net's Impact on Our Minds and Future (New York, NY: Harper Perennial, 2011).
32 . I. P. Pavlov, Conditioned Reflexes (Oxford: Oxford University Press, 1927).
33 . J. B. Watson, ‘Psychology as the behaviorist views it’, Psychological Review , 20 (1913), 158–77; B. F. Skinner, The Behavior of Organisms: An Experimental Analysis (New York, NY: Appleton-Century-Crofts, 1938).
34 . R. Montague, Why Choose This Book? How We Make Decisions (NewYork, NY: Dutton, 2006).
35 . J. Olds, ‘Pleasure center in the brain’, Scientific American , 195 (October 1956), 105–116.
36 . L. Sharpe, ‘A reformulated cognitive-behavioral model of problem gambling: A biopsychosocial perspective’, Clinical Psychology Review , 22 (2002), 1–25.
37 . ‘South Korean couple starved child while raising virtual baby’, CNN News (2010).
38 . M. McLuhan, Understanding Media: The Extensions of Man (New York, NY: McGraw Hill, 1964).
39 . S. Tuckle, Alone Together: Why We Expect More from Technology and Less from Each Other (New York, NY: Basic Books, 2011).
40 . S. Morris, ‘How South West News got its divorce scoop in Second Life’, Guardian (14 November 2008).
41 . P. Bloom, ‘First person plural’, Atlantic Magazine (8 November 2008).
42 . C. Cuomo, C. Vlasto, C. and D. Dwyer, ‘Rep. Anthony Weiner: “The Picture Was of Me and I Sent It”’, ABC News website (6 June 2011).
43 . 国家预防青少年怀孕和意外怀孕运动组织。摘自2008年12月10日该组织关于青年女性发布的调查数据。
44 . J. M. Albright, ‘How do I love thee and thee and thee: Self presentation, deception, and multiple relationships online’, in M. T. Whitty, A. J. Baker and
45 . J. A. Inman (eds), Online Matchmaking (London: Palgrave Macmillan, 2007), 81–96. S. Lipkins, J. Levy and B. Jerabkova, ‘Sexting… Is it all about power?’, Real Psychology website (n. d.).
46 . ‘Evil clown is a scary success’, Orange News (13 April 2010); J. Dibbell, ‘A rape in cyberspace: How an evil clown, a Haitian trickster spirit, two wizards, and a cast of dozens turned a database into a society’, Village Voice (23 December 1993).
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(1) 霍华德·休斯：《地狱天使》制片人、美国著名企业家、飞行家、导演、制片人。——编者注
(2) 他实际想表达的是自己对克林顿的竞选（election）很感兴趣。——译者注
(3) 想要了解镜像神经元从萌芽到流行的全过程，可以进一步阅读由湛庐文化策划、浙江人民出版社出版的《神秘的镜像神经元》中文简体字版。神经科学家格雷戈里·希科克在书中提出了对镜像神经元的质疑，带来了与众不同的新观点。——编者注
(4) 关于棉花糖实验的更多真相和50年以来的后续研究可以在米歇尔的著作《棉花糖实验》中找到，本书中文简体字版由湛庐文化策划、北京联合出版公司出版。——编者注
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(6) 意为好心人，见义勇为者。——译者注
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(11) 即俗称的“@你”。——译者注
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