This research sheds light on the role of product scope on the innovation activity of multinational multi-product firms. We use patent citation data to break down innovation into two types by measuring the degree to which innovation performed by firms is fundamental and the extent to which the...

We test the hypotheses that zombie firms are less productive and have lower employment growth and lower gross investment ratios than non-zombie firms in the same industry sector and that they are a source of contagion for the latter. Ever since Caballero et al. (2008), it has been taken for...