This technique is the subject of the former Backster School in San Diego, which moved to the PEAK center in Cape Coral. A co-inventor of this technique nicknamed “Nard” runs it as a cameo in the 1948 film Call Northside 777. A camera is added to this technique in a “Silent Talker” test. This technique was developed by August Vollmer and John Augustus Larson in Berkeley. Countermeasures to this technique include (*) “confidence and a friendly relationship” according to Aldrich Ames. This technique, which is often used alongside voice stress analysis, has been criticized by Paul Ekman for missing micro·expressions and manipulation during its control questions. For 10 points, name this technique that measures blood pressure, pulse, and skin conductivity to determine if a suspect is telling the truth. ■END■
| 2025 PLAYTIME Online | 04/26/2025 | Y | 9 | 100% | 0% | 22% | 96.22 |
| 2024 PLAYTIME @ Harvard | 04/26/2025 | Y | 4 | 100% | 0% | 25% | 114.00 |
| 2024 PLAYTIME @ Virginia Tech | 07/11/2025 | Y | 3 | 100% | 0% | 33% | 95.67 |
| 2024 PLAYTIME @ UBC | 10/05/2024 | Y | 8 | 100% | 0% | 0% | 101.00 |
| 2024 PLAYTIME @ WashU | 10/12/2024 | Y | 3 | 100% | 0% | 33% | 112.00 |
| 2024 PLAYTIME @ JHU | 10/26/2024 | Y | 8 | 100% | 0% | 25% | 110.00 |
| 2025 PLAYTIME @ Northwest | 12/10/2024 | Y | 4 | 100% | 0% | 0% | 107.50 |
| 2025 PLAYTIME @ Claremont | 12/10/2024 | Y | 5 | 100% | 20% | 20% | 96.20 |
| 2025 PLAYTIME @ Florida | 12/10/2024 | Y | 3 | 100% | 0% | 67% | 113.33 |
| 2025 PLAYTIME @ CWRU | 12/10/2024 | Y | 5 | 100% | 0% | 20% | 95.40 |
| 2025 PLAYTIME @ Sheffield | 12/10/2024 | Y | 6 | 100% | 17% | 0% | 104.67 |
| Player | Team | Opponent | Buzz Position | Value |
|---|---|---|---|---|
| Ian Tullis | Art of Premature Signaling | Claremont B | 50 | 15 |
| Brendan Bethlehem | Cambridge | Warwick A | 66 | 15 |
| Arjun Vijaykumar | Four Generalists in Search of a Power | 2 Italians, 2 Poles, All Noles | 71 | 10 |
| Reed Sexton | Michigan B | Pittsburgh | 73 | 10 |
| Joseph Chambers | Free Agents 1 | Illinois Orange | 74 | -5 |
| Hunter Davis | Quatumvirate | Trip-Hop Quizzer Tricky | 75 | 10 |
| Hazel DePreist-Sullivan | evil women enjoyers | Goober Gang | 76 | 10 |
| Orion Keller | Master and Margaritaville | Adrianne Lenker 4 Nobel Lit Prize 2K65 | 78 | 10 |
| Victor Pavao | Monsieur Hulot's Academic Team | Notre Dame + Epic Games | 79 | -5 |
| Will McCurley | Auburn 2026 | Mahjonng Masters | 79 | 10 |
| Elle Lee | NYU A | Johns Hopkins A | 80 | -5 |
| Graham Troy | 4 quizbowl pros go Virginia on North Carolina | Even in Blacksburg There I Am | 81 | 10 |
| Vasa Clarke | Somehow Paula Deen Returned | Ashurbanipal’s Drag Race | 81 | -5 |
| Arthur Gayden | Chicago A | WashU Charmander | 88 | -5 |
| Caleb Ott | Waterloo B | Toronto E | 90 | 10 |
| Todd Maslyk | Michigan A | Michigan D | 91 | 10 |
| Doug Sachs | Missouri | WashU Bulbasaur | 93 | 10 |
| Vikshar Athreya | Rutgers | Maryland B | 94 | 10 |
| Avery Barnett | Haverford B | Catholic University of America | 94 | 10 |
| Jacob Goodson | Ohio State B | Ohio State D | 95 | -5 |
| Aaron Marchand | Carleton | SD Mines | 95 | 10 |
| Liam Mooney | Mike Dukakis Tank Battalion | mongeese | 95 | 10 |
| Max Lin | we need new names | Egypt Airlines Haters | 95 | 10 |
| Vivian Fan | Claremont A | UCLA B | 95 | 10 |
| Nabhaan Farooqi | McGill B | McGill A | 95 | 10 |
| Rohan Navaneetha | Ohio State D | Ohio State B | 96 | 10 |
| Gareth Thorlakson | Toronto B | Toronto D | 97 | 10 |
| Jack van Nostrand | Toronto Metropolitan | Waterloo C | 97 | 10 |
| Luis D'Olhaberriague | George Washington | George Mason B | 98 | -5 |
| Chansol Park | NYU C | George Mason A | 98 | 10 |
| Shishir Bharadwaj | Lexington | Harvard | 98 | 10 |
| Anne Fjeld | Alberta | Washington Connections | 98 | 10 |
| Lyle Brenner | Billy's Bastion | Project2025BC: Make Assyria Great Again | 98 | 10 |
| Jason Cheng | P.C.‚ Daniel‚ Michel‚ and Jason B | UCSB | 100 | -5 |
| Alexander Nichols | Qin Shi Huang's Immortality Poison | Too much from you lately | 100 | -5 |
| Elijah Mandelbaum | Guelph | Toronto A | 100 | 10 |
| Andrew Fisher | Sheffield B | Warwick B | 101 | 10 |
| Megan Wang | Brown | Brandeis | 103 | -5 |
| Patrick Torre | Maryland A | Georgetown | 104 | 10 |
| Freddie O’Hara | UCLA A | girl 15 whale i mean they | 104 | 10 |
| Jeevan Iyadurai | Keeping Up With the Cardassians | Edwin Laundrorat's Long-Lost Man Unclothès Rat Degrosses | 104 | -5 |
| Kevin | Simon Fraser | Mac A | 104 | 10 |
| Gary Lin | UCSD | Caltech | 105 | 10 |
| Arijit Gupta | Sheffield C | Imperial B | 106 | 10 |
| Raymond Chen | Toronto C | Ottawa A | 106 | 10 |
| Pranet Sirikonda | Ohio State C | Michigan C | 107 | 10 |
| Cade Reinberger | RIT | Belmont | 107 | 10 |
| Drew McIlveen | Ohio State A | Oberlin | 110 | 10 |
| Stefan Stealey-Euchner | Arizona State University A | UW A | 110 | 10 |
| Ted Harrison | Edinburgh | Manchester | 110 | 10 |
| Graham Cope | Too much from you lately | Qin Shi Huang's Immortality Poison | 114 | 10 |
| Conor Thompson | Iowa State | Chicago B | 115 | 10 |
| Rose Phipps | George Mason C | Haverford A | 117 | 10 |
| Jeevika Setzer | Johns Hopkins B | NYU B | 118 | 10 |
| Eoin Neale | Lancaster | Imperial A | 118 | 10 |
| Liam Kusalik | Waterloo A | UBC | 119 | 10 |
| Aneesh Shotriya | Gruh | MSJ | 120 | 10 |
| Eren Michelet | BU | MIT | 123 | 10 |
| Joe O'Connor | George Mason B | George Washington | 127 | 10 |
| Sasha Fillbrandt | UW B | Arizona State University B | 127 | 10 |
| William Bao | Illinois Orange | Free Agents 1 | 127 | 10 |
| Isobel Dobbie | Sheffield A | Warwick C | 127 | 10 |
| Winston Zuo | UCSB | P.C.‚ Daniel‚ Michel‚ and Jason B | 127 | 10 |
| Jacob Finley | Notre Dame + Epic Games | Monsieur Hulot's Academic Team | 128 | 10 |
| Chris Dech | Brandeis | Brown | 128 | 10 |
| Maximilian Niebur | Johns Hopkins A | NYU A | 128 | 10 |
| Tracy Mirkin | Edwin Laundrorat's Long-Lost Man Unclothès Rat Degrosses | Keeping Up With the Cardassians | 128 | 10 |
| Matt Weiner | Ashurbanipal’s Drag Race | Somehow Paula Deen Returned | 128 | 10 |
| John John Groger | WashU Charmander | Chicago A | 128 | 10 |