AI unboxed and jobs : a novel measure and firm-level evidence from three countries / Erik Engberg, Magnus Lodefalk, Farrukh Javed, Martin Längkvist, Aili Tang (Örebro University), Holger Görg (University Kiel and IZA), Natália Monteiro (University of Minho), Hildegunn Kyvik Nordås (Council on Economic Policies), Giuseppe Pulito (Rockwool Foundation Berlin), Sarah Schroeder (Aarhus University) ; IZA Institute of Labor Economics