🚀Now out in @NatureHumBehav 🚀 How can we reduce dishonest behavior in a tax evasion game? A classic method is through honesty oaths. But… do all honesty oaths work the same? To answer this question, we adopted a mega-study approach, testing 21 different honesty oaths on more than 20.000 people. The results are quite surprising: both experts and laypeople failed to predict the most effective interventions. Some oaths worked, others didn’t. The most effective oath almost halved tax evasion. So, which oath was it? It was one that highlighted specific behavior: “I hereby declare that I will provide honest information when reporting my final income from the sorting task.” You can read the full paper here: nature.com/articles/s41562-0… This project was wonderfully led by Janis Zickfield: @Goatfield2 w/ @kascigala, @CElbaek, John Michael, Mathilde Tonnesen, @gabriellevy1, Shahar Ayal, @IsabelThielmann, @LailaNockur, @E_yal_Pe_er, Rachel Barkan, Simen Bo, @bahniks, Daniele Nosenzo, Ralph Hertwig, Nina Mazar, Alexa Weiss, Ann-Kathrin Koessler, @MontalRoni51916, @shafenbraedl, Yngwie Asbjorn Nielsen, @PatKanngiesser, Simon Schindler, Philipp Gerlach, @NCKobis, Nicolas Jacquement, @mVranka, @danariely, @jareefbnmartuza, @feldman_yuval, @mbialek82, @jan_k_woike, Zoe Rahwan, @alicia_seidl, Eileen Chou, @agnekaj, @simeonschudy, @UGlogowsky, Anna Czarna, Stefan Pfattheicher, Panagiotis Mitkidis.