Advice and Tips for Players and DMs/GMs
Curated by: RPG PHD (139 videos)
Dr. Ben discusses Signal Detection Theory for ttrpgs (Episode #182). #dnd #pathfinder #ttrpg #wfrp Website https://rpgphd.com/ Discord https://discord.gg/e49rJVQCwW RPG PHD swag!!! https://rpg-phd.myspreadshop.com Facebook https://www.facebook.com/profile.php?id=100089593636905 Instagram https://www.instagram.com/rpg_phd/ Bluesky @rpg-phd.bsky.social Special thanks to Evelina for the thumbnail template, much appreciated!! 😊 Description: In this episode, I trace Signal Detection Theory from Neyman, Pearson, and Wald's statistical groundwork through Green and Swets's 1966 formalization, and apply it directly to the table: how GMs calibrate signal against noise in their descriptions, why "read the room less" is usually the wrong note to give a sharp player, and how designers like Robin Laws (Gumshoe) and Jesse Ross (Trophy Dark) build wildly different answers to the same detection problem into their systems. Along the way: the Von Restorff effect, confirmation bias, and why your players' attention isn't the same at hour one as it is at hour three. If you've ever buried a clue too well, or watched a table chase a false lead for half a session, this one's for you. Tags: Signal Detection Theory, RPG PHD, tabletop RPG design, TTRPG GMing tips, game master advice, DND worldbuilding, GM techniques, TTRPG psychology, game design theory, Gumshoe system, Trail of Cthulhu, Trophy Dark, mystery game design, pacing in TTRPGs, information design tabletop games, cognitive psychology for game masters, running mysteries in D&D, clue design RPG, player attention TTRPG, Von Restorff effect, confirmation bias games, RPG theory, tabletop game design psychology --------------------------------------------- 00:00 Intro 01:18 Signal Detection Theory 03:51 Threshold is a Choice 07:40 Noise & Floor Density 11:08 What Designers Do 13:44 Training Detector 17:04 Pitfalls 19:00 Step By Step Guide 21:54 Thoughts? -------------------------------------------- Works Cited Cherry, E. Colin. "Some Experiments on the Recognition of Speech, with One and with Two Ears." Journal of the Acoustical Society of America, vol. 25, no. 5, 1953, pp. 975–979. Green, David M., and John A. Swets. Signal Detection Theory and Psychophysics. Wiley, 1966. Hardt, Moritz, and Benjamin Recht. Patterns, Predictions, and Actions: A Story About Machine Learning. arXiv, 10 Feb. 2021, arxiv.org/abs/2102.05242. Mackworth, N. H. "The Breakdown of Vigilance during Prolonged Visual Search." Quarterly Journal of Experimental Psychology, vol. 1, no. 1, 1948, pp. 6–21. Mothwin, Cassi. "The Forest Hates You: A Review of Trophy Dark." Cassi Mothwin, 29 Nov. 2023, cassimothwin.com/2023/11/29/the-forest-hates-you-a-review-of-trophy-dark/. Nickerson, Raymond S. "Confirmation Bias: A Ubiquitous Phenomenon in Many Guises." Review of General Psychology, vol. 2, no. 2, 1998, pp. 175–220. Theel, Charlie. "Trophy Dark Is the Role-Playing Game That Offers Doom Instead of Glory." Polygon, 24 Oct. 2022, www.polygon.com/reviews/23416587/trophy-dark-review-rpg. Von Restorff, Hedwig. "Über die Wirkung von Bereichsbildung im Spurenfeld." Psychologische Forschung, vol. 18, 1933, pp. 299–342. Wallace, W. P. "Review of the Historical, Empirical and Theoretical Status of the Von Restorff Phenomenon." Psychological Bulletin, vol. 63, no. 6, 1965, pp. 410–424. "GUMSHOE Rules Summary." Pelgrane Press, 29 Sept. 2017, pelgranepress.com/2017/09/29/gumshoe-rules-summary/. "Gumshoe System." Grokipedia, grokipedia.com/page/Gumshoe_System. Accessed 30 July 2026. "Signal Detection Theory." ScienceDirect Topics, Elsevier, www.sciencedirect.com/topics/computer-science/signal-detection-theory. Accessed 30 July 2026. "The Independents: Trophy." Cannibal Halfling Gaming, 12 Feb. 2020, cannibalhalflinggaming.com/2020/02/12/the-independents-trophy/. "Trail of Cthulhu." Pelgrane Press, pelgranepress.com/trail-of-cthulhu/. Accessed 30 July 2026. Music and Sounds: https://www.epidemicsound.com/track/Erdns8jA3D/ https://www.epidemicsound.com/track/MRyCi54t7M/ https://www.epidemicsound.com/track/AQBpWzOsID/ https://www.epidemicsound.com/track/yCvSWOBYUe/ Music: http://creativecommons.org/publicdomain/mark/1.0/ https://www.epidemicsound.com/track/c0X3Z8H8uZ/ https://www.epidemicsound.com/track/yCvSWOBYUe/ Music: http://creativecommons.org/publicdomain/mark/1.0/ https://www.epidemicsound.com/track/bWHPOsoaql/ https://www.epidemicsound.com/track/uDAHxg3lIS/ https://www.epidemicsound.com/track/e3mQvva1kZ/ https://www.epidemicsound.com/track/e3mQvva1kZ/ https://www.epidemicsound.com/track/e3mQvva1kZ/ https://www.epidemicsound.com/track/2dLRmfzdA5/ https://www.epidemicsound.com/track/jrNZjxJQqZ/ https://www.epidemicsound.com/track/c0X3Z8H8uZ/ https://www.epidemicsound.com/sound-effects/tracks/8c51eca6-dbb5-4925-b4ec-7ee51630322e