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The Good Judgment Project

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158:. The study employed several thousand people as volunteer forecasters. Using personality-trait tests, training methods and strategies the researchers at GJP were able to select forecasting participants with less cognitive bias than the average person; as the forecasting contest continued the researchers were able to further down select these individuals in groups of so-called 98:, and created an aggregation algorithm to combine the individual predictions of the forecasters. GJP won both seasons of the contest, and were 35% to 72% more accurate than any other research team. Starting with the summer of 2013, GJP were the only research team IARPA-ACE was still funding, and GJP participants had access to the 183:
of the Good Judgment Project started to operate on the web in July 2015 under the name Good Judgment Inc. Their services include forecasts on questions of general interest, custom forecasts, and training in Good Judgment's forecasting techniques. Starting in September 2015, Good Judgment Inc has been
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A significant amount of research has been conducted based on the Good Judgment Project by the people involved with it. The results show that harnessing a blend of statistics, psychology, training and various levels of interaction between individual forecasters, consistently produced the best forecast
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at IARPA (IARPA-ACE). The first contest began in September 2011. GJP was one of many entrants in the IARPA-ACE tournament, which posed around 100 to 150 questions each year on geopolitical events. The GJP research team gathered a large number of talented amateurs (rather than geopolitical subject
276:, that divulges the main findings of the research conducted with the data from the GJP. Co-author Gardner had already published a book in 2010, that quoted previous research by Tetlock that seeded the GJP effort. A book review in the September 26, 2015, print edition of the 1116:"The Surprising Accuracy Of Crowdsourced Predictions About The Future. Do you know whether Turkey will get a new constitution? It turns out you do: A group of well-informed citizens can predict future events more often than any foreign policy expert or CIA analyst" 184:
running a public forecasting tournament at the Good Judgment Open site. Like the Good Judgment Project, Good Judgment Open has questions about geopolitical and financial events, although it also has questions about US politics, entertainment, and sports.
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Mellers, Barbara; Ungar, Lyle; Baron, Jonathan; Ramos, Jaime; Gurcay, Burcu; Fincher, Katrina; Scott, Sydney E.; Moore, Don; Atanasov, Pavel; Swift, Samuel A.; Murray, Terry; Stone, Eric; Tetlock, Philip E. (2014-05-01).
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Mellers, Barbara; Stone, Eric; Murray, Terry; Minster, Angela; Rohrbaugh, Nick; Bishop, Michael; Chen, Eva; Baker, Joshua; Hou, Yuan; Horowitz, Michael; Ungar, Lyle; Tetlock, Philip (2015-05-01).
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I think Philip Tetlock's "Superforecasting: The Art and Science of Prediction," ..., is the most important book on decision making since Daniel Kahneman's "Thinking, Fast and Slow."
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Atanasov, Pavel; Rescober, Phillip; Stone, Eric; Swift, Samuel A.; Servan-Schreiber, Emile; Tetlock, Philip; Ungar, Lyle; Mellers, Barbara (2016-04-22).
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to commercial activities, recruiting forecasters and aggregating the predictions of the most historically accurate among them to
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aired a segment on The Good Judgment Project by the title "So You Think You're Smarter Than a CIA Agent", on April 2, 2014. The
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Ulfelder, Jay (March 27, 2014). Using the 'Wisdom of (Expert) Crowds' to Forecast Mass Atrocities (Report).
294: 288: 119: 47: 1565: 1621: 769: 319: 240: 972: 634: 416: 1569: 828: 1196: 1222:"Experts see a Republican Senate and fast-track authority for Obama as keys to new trade agreements" 829:"The Good Judgment Project: A Large Scale Test of Different Methods of Combining Expert Predictions" 1631: 924: 331: 300: 282: 206: 66: 1420: 1385:"Identifying and Cultivating Superforecasters as a Method of Improving Probabilistic Predictions" 884: 705: 310: 200: 147: 143: 791: 1486: 1443: 1412: 1404: 1339: 1262: 1229: 1146: 853: 849: 824: 811: 697: 689: 180: 27: 1396: 1093: 874: 841: 803: 681: 305: 272: 259: 286:
article depicts it as: "The most important book on decision making since Daniel Kahneman’s
1065: 480: 216: 135: 134:, and prediction-markets entrepreneur Emile Servan-Schreiber. The advisory board included 122:. The website lists a total of about 30 team members, including the co-leaders as well as 115: 43: 447: 244:
published a story on the GJP on January 29, 2015. An article on the GJP appeared on the
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matter experts), gave them basic tutorials on forecasting best practice and overcoming
906:"Meet the Elite Team of Superforecasters Who Have Turned Future-Gazing Into a Science" 1610: 1384: 1331: 1033: 1005: 977: 888: 639: 476:"Good judgment in forecasting international affairs (and an invitation for season 3)" 253: 194: 151: 139: 123: 709: 1424: 257:
has a section detailing the involvement of the GJP in the tournament run by IARPA.
74: 1287:"Feature story: Bob Sawyer of Woodside discovers his latent talent in forecasting" 1089:"Huge Experiment Finds Regular Folks Predict World Events Better Than CIA Agents" 879: 862: 78: 70: 925:"How the Good Judgment Project's Superforecasters Use Data to Make Predictions" 905: 127: 1540: 1490: 1408: 1400: 1266: 1233: 1150: 863:"Small steps to accuracy: Incremental belief updaters are better forecasters" 815: 693: 685: 1001:"International: Who's good at forecasts? How to sort the best from the rest" 670:"Psychological strategies for winning a geopolitical forecasting tournament" 669: 234:
published articles on the GJP respectively on January 20, 21, and 29, 2015.
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Future Babble: Why Expert Predictions Fail - and Why We Believe Them Anyway
1416: 807: 701: 609: 503:"About Superforecasting | Unprecedented Accurate & Precise Forecasting" 792:"Distilling the Wisdom of Crowds: Prediction Markets vs. Prediction Polls" 270:
The project spawned a 2015 book by Tetlock and coauthored by Dan Gardner,
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Atanasov, P.; Witkowski, J.; Ungar, L.; Mellers, B.; Tetlock, P. (2020).
845: 1512:"Can You See the Future? Probably Better Than Professional Forecasters" 346: 162:. The last season of the GJP enlisted a total of 260 superforecasters. 89:
The Good Judgment Project began in July 2011 in collaboration with the
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published an article that mentioned the GJP on January 8, 2015. The
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published online a short article summarizing the paper by Mellers,
502: 390: 528:"How can we prevent major conflicts like a Russia-Ukraine war?" 1360:"Who's Best at Predicting the Future? (and How to Get Better)" 227: 211: 549: 547: 1594: 823:
Ungar, Lyle; Mellers, Barbara; Satopää, Ville; Baron, Jon;
556:"Prediction and Good Judgment: Can ICEWS Inform Forecasts?" 1601: 948: 833:
Association for the Advancement of Artificial Intelligence
608:. The Good Judgment Project. July 27, 2011. Archived from 368: 1336:
Wiser: Getting Beyond Groupthink to Make Groups Smarter
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How Not to Be Wrong: The Power of Mathematical Thinking
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Wiser: Getting Beyond Groupthink to Make Groups Smarter
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Dribben, Melissa; Inquirer Staff Writer (2015-02-04).
1172:"How US Agencies Are Using the Web to Pick Our Brains" 629: 627: 220:
published an article on the GJP on September 5, 2014.
1255:"Does anyone make accurate geopolitical predictions?" 308:. On September 30, 2015, NPR aired an episode of the 1440:
Superforecasting - The Art and Science of Prediction
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Mellers, Barbara; Michael C. Horowitz (2015-01-29).
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Organizational Behavior and Human Decision Processes
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Superforecasting - The Art and Science of Prediction
635:"The perils of prediction: Adventures in punditry" 318:; guests on the show were Tetlock, IARPA Director 342:Intelligence Advanced Research Projects Activity 63:Intelligence Advanced Research Projects Activity 1438:Tetlock, Philip E.; Gardner, Dan (2015-09-29). 267:., that wraps up the main findings of the GJP. 91:Aggregative Contingent Estimation (ACE) Program 582:"So You Think You're Smarter Than A CIA Agent" 662: 660: 658: 8: 251:, Philly.com, on February 4, 2015. The book 973:"Monetary policy: How likely is deflation?" 606:"The idea behind the Good Judgment Project" 446:. The Good Judgment Project. Archived from 393:. The Good Judgment Project. July 27, 2011 57:The project began as a participant in the 1308:"Fortune telling: Crowds surpass pundits" 878: 410: 408: 469: 467: 465: 391:"Who's who in the Good Judgment Project" 100:Integrated Conflict Early Warning System 474:Horowitz, Michael (November 26, 2013). 357: 369:"Welcome to the Good Judgment Project" 363: 361: 1389:Perspectives on Psychological Science 554:Dickenson, Matt (November 12, 2013). 192:GJP has repeatedly been discussed in 7: 1197:"Could you be a 'super-forecaster'?" 575: 573: 1170:Hamilton, Keegan (8 January 2015). 923:Gossett, Stephen (August 6, 2020). 774:Sign Up for a Prediction Tournament 322:, and superforecaster Elaine Rich. 314:centering on the GJP and the book 110:The co-leaders of the GJP include 14: 1338:. Harvard Business Review Press. 337:Aggregative Contingent Estimation 59:Aggregative Contingent Estimation 1087:Bender, Jeremy (April 3, 2014). 415:Brooks, David (March 21, 2013). 724:"The first championship season" 280:discusses the main concepts. A 198:. GJP has also been covered in 904:Brody, Liz (January 1, 2022). 526:Matthews, Dylan (2022-02-16). 65:(IARPA). It then extended its 16:Crowd-sourced event prediction 1: 1564:McEnroe, Colin; Wolf, Chion. 1334:; Hastie, Reid (2014-12-23). 1220:Jensen, Nathan (2015-01-21). 1139:"How to see into the future" 827:; Ramos, Jaime; Swift, Sam. 171:for several years in a row. 1467:. McClelland & Stewart. 1463:Gardner, Dan (2010-10-12). 1195:Burton, Tara (2015-01-20). 1137:Harford, Tim (2014-09-05). 880:10.1016/j.obhdp.2020.02.001 750:. The Good Judgment Project 371:. The Good Judgment Project 1648: 1118:. Co.exist. April 21, 2014 1061:"More chatter than needed" 52:University of Pennsylvania 39:Expert Political Judgment 20:The Good Judgment Project 1566:"The Colin McEnroe Show" 1401:10.1177/1745691615577794 1029:"The experts' best bets" 686:10.1177/0956797614524255 50:, all professors at the 1545:Harvard Business Review 1516:The Wall Street Journal 558:. Predictive Heuristics 295:Harvard Business Review 289:Thinking, Fast and Slow 808:10.1287/mnsc.2015.2374 298:paired it to the book 71:forecast future events 42:), decision scientist 1570:National Public Radio 949:"Good Judgment® Open" 674:Psychological Science 248:Philadelphia Inquirer 61:(ACE) program of the 1541:"Question Certainty" 1059:(November 1, 2013). 981:. September 13, 2011 846:10.2139/ssrn.2418980 1617:Government research 1442:. New York: Crown. 1259:The Washington Post 1226:The Washington Post 1037:. November 10, 2021 1009:. November 18, 2013 643:. September 2, 2011 332:Wisdom of the crowd 283:Wall Street Journal 232:The Washington Post 207:The Washington Post 1602:Good Judgment Open 1479:"Unclouded vision" 825:Tetlock, Philip E. 796:Management Science 786:Multiple Sources: 311:Colin McEnroe Show 201:The New York Times 175:Good Judgment Inc. 148:Michael Mauboussin 144:J. Scott Armstrong 73:. Predictions are 1449:978-0-8041-3669-3 1345:978-1-4221-2299-0 1332:Sunstein, Cass R. 417:"Forecasting Fox" 28:Philip E. Tetlock 1639: 1627:Futures projects 1598: 1597: 1595:Official website 1581: 1580: 1578: 1576: 1561: 1555: 1554: 1552: 1551: 1536: 1530: 1529: 1524: 1522: 1507: 1501: 1500: 1498: 1497: 1475: 1469: 1468: 1460: 1454: 1453: 1435: 1429: 1428: 1380: 1374: 1373: 1371: 1370: 1364:Psychology Today 1356: 1350: 1349: 1328: 1322: 1321: 1319: 1318: 1303: 1297: 1296: 1294: 1293: 1283: 1277: 1276: 1274: 1273: 1250: 1244: 1243: 1241: 1240: 1217: 1211: 1210: 1208: 1207: 1192: 1186: 1185: 1183: 1182: 1167: 1161: 1160: 1158: 1157: 1134: 1128: 1127: 1125: 1123: 1112: 1106: 1105: 1103: 1101: 1094:Business Insider 1084: 1078: 1077: 1075: 1073: 1053: 1047: 1046: 1044: 1042: 1025: 1019: 1018: 1016: 1014: 997: 991: 990: 988: 986: 969: 963: 962: 960: 959: 945: 939: 938: 936: 935: 920: 914: 913: 901: 895: 892: 882: 857: 836: 819: 784: 778: 777: 766: 760: 759: 757: 755: 744: 738: 737: 735: 734: 720: 714: 713: 680:(5): 1106–1115. 664: 653: 652: 650: 648: 631: 622: 621: 619: 617: 602: 596: 595: 593: 592: 577: 568: 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Index

Philip E. Tetlock
Superforecasting
Expert Political Judgment
Barbara Mellers
Don Moore
University of Pennsylvania
Aggregative Contingent Estimation
Intelligence Advanced Research Projects Activity
crowd wisdom
forecast future events
scored
Brier scores
Aggregative Contingent Estimation (ACE) Program
cognitive biases
Integrated Conflict Early Warning System
Philip Tetlock
Barbara Mellers
Don Moore
David Budescu
Lyle Ungar
Jonathan Baron
Daniel Kahneman
Robert Jervis
J. Scott Armstrong
Michael Mauboussin
Carl Spetzler
Justin Wolfers
spin-off
The Economist
The New York Times

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