have a positive influence on the profitability of firms. This study examines the effect of product diversification on the … profitability of 25 German food industry sectors from 1977 to 1994. The analysis reveals a positive effect of diversification on the … profitability of industries. …

it can be argued that product innovation raises barriers to entry and thus improve profitability. This study examines the … effect of functional food innovative activity (compared to overall innovative activity) on the profitability of 23 German …, advertising expenditure and capital intensity. While a positive relationship between product introduction and profitability was …

on the effects of the patent stock on profitability. The data base is a representative sample of German manufacturing … patent stock has a strong and robust effect on profitability. …

leakage of knowledge in an industry will negatively affect profitability. This paper presents the results of an empirical … study on the effects of outgoing and incoming spillovers on firms? profitability. It turns out that the expected asymmetry …

if they are not. We present empirical evidence on effects of perceived threat of entry on profitability. Using … profitability is confirmed. The number and the relative size of competitors also exert considerable effects. We find no …

Theory predicts a positive relationship between market concentration and profitability in most scenarios. In empirical … and profitability. …

Germany, this paper presents the first comprehensive evidence on the relationship between exports and profitability. It … documents that the positive profitability differential of exporters compared to non-exporters is statistically significant …. Instead, we use a newly developed continuous treatment approach and show that exporting improves the profitability almost over …