-conduct-performance approach 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 … profitability was hypothesized, it is not supported by data. …

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. …