크레딧 출연 Line Hatland Narrator Robert Biswas-Diener Himself John Cacioppo Himself Ed Diener Himself Sonja Lyubomirsky Herself Robert Schwartz Himself Ruth Veenhoven Herself Joar Vittersø Himself 스텝 Hanne Myren Production Line Hatland Writing Jacob Risdal Otnes Editing Øyvind Rostad Production Odd Reinhardt Nicolaysen Camera Line Hatland Directing Håkon Iversen Sound Erik Edland Camera Jan Otto Ertesvåg Visual Effects