Episodes

  • Do broken windows cause crime?

    Do broken windows cause crime?
    Jun 15 2026
    The broken windows theory suggests that one broken window can cause a neighbourhood to descend into disrepair. But is it true? Today, with the award-winning professor Leidy Klotz, we investigate the broken windows theory and explain how environments shape our behaviour. --- Become an FSB member: https://get.fsb.org.uk/nudge/ Leidy’s book Subtract: https://amzn.to/4df4duk Leidy’s latest book In a Good Place: https://amzn.to/4tzjCvE Join 11,934 readers of the Nudge Newsletter: https://www.nudgepodcast.com/mailing-list Unlock the Nudge Vaults: https://www.nudgepodcast.com/vaults Connect on LinkedIn: https://www.linkedin.com/in/phill-agnew/ --- Today’s sources: Brown, G., & Baer, M. (2011). Location in negotiation: Is there a home field advantage? Organizational Behavior and Human Decision Processes, 114(2), 190–200. Cialdini, R. B. (2016). Pre-suasion: A revolutionary way to influence and persuade. Simon & Schuster. Langer, E. J., & Rodin, J. (1976). The effects of choice and enhanced personal responsibility for the aged: A field experiment in an institutional setting. Journal of Personality and Social Psychology, 34(2), 191–198. Pinsker, H., Kupfermann, I., Castellucci, V., & Kandel, E. R. (1970). Habituation and dishabituation of the gill-withdrawal reflex in Aplysia. Science, 167(3926), 1740–1742. Rajecki, D. W. (1974). Effects of prenatal exposure to auditory or visual stimulation on postnatal distress vocalizations in chicks. Behavioral Biology, 11(4), 525–536. Rodin, J., & Langer, E. J. (1977). Long-term effects of a control-relevant intervention with the institutionalized aged. Journal of Personality and Social Psychology, 35(12), 897–902. Wells, M. M. (2000). Office clutter or meaningful personal displays: The role of office personalization in employee and organizational well-being. Journal of Environmental Psychology, 20(3), 239–255.
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    24 mins
  • “How we used nudges reach £12 billion in sales” Octopus Energy's Pete Miller

    “How we used nudges reach £12 billion in sales” Octopus Energy's Pete Miller
    Jun 8 2026
    Octopus Energy went from £0 in revenue to £12 billion in 10 years. Today, on Nudge, I chat with their first employee Pete Miller, who explains how they used nudges to grow. Hear why they: 1) Encourage customers to spin a wheel to reward metre readings. 2) Give away free electricity at 4pm. 3) Play you the number one song from the year you turned 14. 4) And gave away 40,000 electric blankets during an energy crisis. --- Become an FSB member: https://get.fsb.org.uk/nudge/ Unlock the Nudge Vaults: https://www.nudgepodcast.com/vaults Subscribe to my newsletter: https://www.nudgepodcast.com/mailing-list Connect on LinkedIn: https://www.linkedin.com/in/phill-agnew/ --- Today’s sources: Shampanier, K., Mazar, N., & Ariely, D. (2007). Zero as a special price: The true value of free products. Marketing Science, 26(6), 742–757. Shen, L., Fishbach, A., & Hsee, C. K. (2015). The motivating-uncertainty effect: Uncertainty increases resource investment in the process of reward pursuit. Journal of Consumer Research, 41(5), 1301–1315 Skinner, B. F. (1938). The behavior of organisms: An experimental analysis. Appleton-Century-Crofts.
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    41 mins
  • Enhanced Games: Did the $320m marketing stunt backfire?

    Enhanced Games: Did the $320m marketing stunt backfire?
    Jun 1 2026
    The Enhanced Games, hosted in Las Vegas last Saturday, made a bold claim. With the use of performance-enhancing drugs, enhanced athletes would break not just personal records but world records. And the end goal? To sell those same drugs to the masses. It’s arguably the biggest marketing stunt of the year so far, and today on Nudge I reveal the psychology behind it. Did the Enhanced Games succeed? Listen to find out. --- Unlock the Nudge Vaults: https://www.nudgepodcast.com/vaults Subscribe to my newsletter: https://www.nudgepodcast.com/mailing-list Connect on LinkedIn: https://www.linkedin.com/in/phill-agnew/ --- Today’s sources Landy, D., & Sigall, H. (1974). Beauty is talent: Task evaluation as a function of the performer's physical attractiveness. Journal of Personality and Social Psychology, 29(3), 299–304. Miller, A. G. (1970). Role of physical attractiveness in impression formation. Psychonomic Science, 19(4), 241–242. Mujika, I., & Burke, L. M. (2019). Swimming fast when it counts: A 7-year analysis of Olympic and World Championships performance. International Journal of Sports Physiology and Performance. Nicolau, J. L., Mellinas, J. P., & Martín-Fuentes, E. (2020). The halo effect: A longitudinal approach. Annals of Tourism Research, 83, 102938. Nisbett, R. E., & Wilson, T. D. (1977). The halo effect: Evidence for unconscious alteration of judgments. Journal of Personality and Social Psychology, 35(4), 250–256.
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    28 mins
  • What makes a good logo?

    What makes a good logo?
    May 25 2026
    In this episode, I chat to Pete Miller, part of the co-founding team at Octopus Energy, who helped design one of the most recognisable new logos in Britain. Hear how Octopus used two proven psychological principles to build a logo people remember (and why those same principles are being ignored by most of the industry). You'll learn: - Why a distinct logo made one beer taste 5% better - How a 1933 German study explains why Octopus stands out - Why brands from McDonald's to KFC give their logos human faces - And what happened when researchers asked people to turn off a robot --- Subscribe to my newsletter: https://www.nudgepodcast.com/mailing-list Unlock the Nudge Vaults: https://www.nudgepodcast.com/vaults Connect on LinkedIn: https://www.linkedin.com/in/phill-agnew/ Read Aaron’s book: ⁠https://thethingswelove.com/⁠ --- Today’s sources: Bartneck, C., Van Der Hoek, M., Mubin, O., & Al Mahmud, A. (2007). "Daisy, Daisy, give me your answer do!": Switching off a robot. Proceedings of the 2nd ACM/IEEE International Conference on Human-Robot Interaction, 217–222. Shotton, R. (2017). The choice factory: 25 behavioural biases that influence what we buy. Harriman House. Shotton, R. (2023). The illusion of choice: 16½ psychological biases that influence what we buy. Harriman House. Von Restorff, H. (1933). Über die Wirkung von Bereichsbildung im Spurenfeld. Psychologische Forschung, 18, 299–342.
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    24 mins
  • How peer pressure built a $5 billion fitness revolution

    How peer pressure built a $5 billion fitness revolution
    May 18 2026
    In Singapore, a group of runners charge 50p per kilometre to run on strangers' Strava accounts. That's how far people will go to look fit online. This episode explains the psychology behind why being watched changes everything. --- Owain’s book: https://amzn.to/4smVtrP Owain’s company CogCo: https://cogco.co/ Unlock the Nudge Vaults: ⁠https://www.nudgepodcast.com/vaults⁠ Join 11,626 readers of my newsletter: ⁠https://www.nudgepodcast.com/mailing-list ⁠ Connect on LinkedIn: ⁠https://www.linkedin.com/in/phill-agnew/⁠ --- Today’s sources: Gerber, A. S., Green, D. P., & Larimer, C. W. (2008). Social pressure and voter turnout: Evidence from a large-scale field experiment. American Political Science Review, 102(1), 33–48. Sallis, A., Harper, H., & Sanders, M. (2018). Effect of persuasive messages on National Health Service organ donor registrations: A pragmatic quasi-randomised controlled trial with one million UK road taxpayers. Trials, 19, 513. Service, O., & Gallagher, R. (2017). Think small: The surprisingly simple ways to reach big goals. Michael O'Mara Books.Triplett, N. (1898). The dynamogenic factors in pacemaking and competition. American Journal of Psychology, 9, 507–533.
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    22 mins
  • Prof Wiseman: “My (Failed) Search for the World's Funniest Joke”

    Prof Wiseman: “My (Failed) Search for the World's Funniest Joke”
    May 11 2026
    Professor Richard Wiseman searched for the world’s funniest joke. He found it. But it wasn’t what he expected. --- Richard’s book Quirkology: https://amzn.to/4shYOJ6 Richard’s book 59 Seconds: https://amzn.to/3Pf9pWI Richard’s SubStack: https://richardwiseman.substack.com/ Join 11,934 readers of the Nudge Newsletter: https://www.nudgepodcast.com/mailing-list Unlock the Nudge Vaults: https://www.nudgepodcast.com/vaults Connect on LinkedIn: https://www.linkedin.com/in/phill-agnew/ --- Today’s sources: Asch, S. E. (1955). Opinions and social pressure. Scientific American, 193(5), 31–35. Crum, A. J., & Langer, E. J. (2007). Mind-set matters: Exercise and the placebo effect. Psychological Science, 18, 165–171. Wiseman, R. (2009). 59 seconds: Think a little, change a lot. Knopf. Wolff, H. A., Smith, C. E., & Murray, H. A. (1934). The psychology of humor: I. A study of responses to race-disparagement jokes. Journal of Abnormal and Social Psychology, 28, 345–365.
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    24 mins
  • Why willpower alone doesn’t work

    Why willpower alone doesn’t work
    May 4 2026
    Three thousand years ago, Odysseus tied himself to a mast to resist the Sirens. He didn't trust his willpower, so he removed the choice entirely. Today, Owain Service, co-founder of the Behavioural Insights Team and CEO at CogCo, calls that a commitment device. And modern evidence shows it works for everything from saving money to staying married. --- Owain’s book: https://amzn.to/4smVtrP Owain’s company CogCo: https://cogco.co/ Unlock the Nudge Vaults: ⁠https://www.nudgepodcast.com/vaults⁠ Join 11,626 readers of my newsletter: ⁠https://www.nudgepodcast.com/mailing-list ⁠ Connect on LinkedIn: ⁠https://www.linkedin.com/in/phill-agnew/⁠ --- Today’s sources: Asch, S. E. (1951). Effects of group pressure upon the modification and distortion of judgment. In H. Guetzkow (Ed.), Groups, leadership and men (pp. 177–190). Carnegie Press. Ashraf, N., Karlan, D., & Yin, W. (2006). Tying Odysseus to the mast: Evidence from a commitment savings product in the Philippines. Quarterly Journal of Economics, 121(2), 635–672. Behavioural Insights Team. (2013). New BIT trial results: helping people back into work. https://www.bi.team/blogs/new-bit-trial-results-helping-people-back-into-work/ Gollwitzer, P. M., & Brandstätter, V. (1997). Implementation intentions and effective goal pursuit. Journal of Personality and Social Psychology, 73(1), 186–199. Gollwitzer, P. M., & Sheeran, P. (2006). Implementation intentions and goal achievement: A meta-analysis of effects and processes. Advances in Experimental Social Psychology, 38, 69–119. Milkman, K. (2021). How to change: The science of getting from where you are to where you want to be. Portfolio/Penguin. Olson, R. (2014, October 10). What makes for a stable marriage. http://www.randalolson.com/2014/10/10/what-makes-for-a-stable-marriage/ Read, D., Loewenstein, G., & Kalyanaraman, S. (1999). Mixing virtue and vice: Combining the immediacy effect and the diversification heuristic. Journal of Behavioral Decision Making, 12(4), 257–273. Service, O., & Gallagher, R. (2017). Think small: The surprisingly simple ways to reach big goals. Michael O'Mara Books.
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    25 mins
  • Prof Wiseman: “This is how you spot a liar”

    Prof Wiseman: “This is how you spot a liar”
    Apr 27 2026
    Warning, you’ll hear a lie in this episode. You won’t be told it's a lie. And 29% of those who listen probably won’t spot the lie. But if you listen till the end, you’ll learn the proven tips to spot lies like these. Today on Nudge, Professor Richard Wiseman explains: 1) How to spot a liar 2) What makes someone lucky 3) If we’re really separated by six connections 4) And why enlarged pupils made men buy books --- Richard’s book Quirkology: https://amzn.to/4shYOJ6 Richard’s book 59 Seconds: https://amzn.to/3Pf9pWI Richard’s SubStack: https://richardwiseman.substack.com/ Join 11,934 readers of the Nudge Newsletter: https://www.nudgepodcast.com/mailing-list Unlock the Nudge Vaults: https://www.nudgepodcast.com/vaults Connect on LinkedIn: https://www.linkedin.com/in/phill-agnew/ --- Today’s sources: DePaulo, B. M., & Morris, W. L. (2004). Discerning lies from truths: Behavioural cues to deception and the indirect pathway of intuition. In P. A. Granhag & L. A. Strömwall (Eds.), The detection of deception in forensic contexts (pp. 15–40). Cambridge University Press. The Global Deception Research Team. (2006). A world of lies. Journal of Cross-Cultural Psychology, 37(1), 60–74. Milgram, S. (1967). The small-world problem. Psychology Today, 1, 61–67. Stewart, J. E., II. (1980). Defendant’s attractiveness as a factor in the outcome of criminal trials: An observational study. Journal of Applied Social Psychology, 10(4), 348–361. Vrij, A. (2000). Detecting lies and deceit: The psychology of lying and the implications for professional practice. John Wiley & Sons. Wiseman, R. (1995). The Megalab truth test. Nature, 373, 391. Wiseman, R. (2003, June 4). It really is a small world that we live in. The Daily Telegraph, p. 16.
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    31 mins