Psychological science, vol 29, iss 9 Psychological Science, 29(9), 1515-1525. Sage Publications Bryant, G A, Fessler, D M T, Fusaroli, R, Clint, E, Amir, D, Chávez, B, Denton, K K, Díaz, C, Duran, L T, Fanćovićová, J, Fux, M, Ginting, E F, Hasan, Y, Hu, A, Kamble, S V, Kameda, T, Kuroda, K, Li, N P, Luberti, F R, Peyravi, R, Prokop, P, Quintelier, K J P, Shin, H J, Stieger, S, Sugiyama, L S, van den Hende, E A, Viciana-Asensio, H, Yildizhan, S E, Yong, J C, Yuditha, T & Zhou, Y 2018, ' The Perception of Spontaneous and Volitional Laughter Across 21 Societies ', Psychological Science, vol. 29, no. 9, pp. 1515-1525 . https://doi.org/10.1177/0956797618778235 Psychological Science, 29(9) Bryant, GA; Fessler, DMT; Fusaroli, R; Clint, E; Amir, D; Chavez, B; et al.(2018). The Perception of Spontaneous and Volitional Laughter Across 21 Societies. PSYCHOLOGICAL SCIENCE, 29(9), 1515-1525. doi: 10.1177/0956797618778235. UCLA: Retrieved from: http://www.escholarship.org/uc/item/1h1032fh