Balancing the Two Knowledge Dimensions in Innovation Efforts: An Empirical Examination among Pharmaceutical Firms

This study investigates the relationships between the two knowledge dimensions (knowledge breadth and knowledge depth) and two types of innovations (radical innovation and incremental innovation). While existing literature identifies knowledge in general as an important driver of innovation, the exact relationships between knowledge breadth/depth and incremental/radical innovations are not clear. Drawing from the knowledge-based view, this study advances the understanding of the relationships between knowledge dimensions and types of innovations by hypothesizing a nonlinear relationship between knowledge breadth and radical innovation as well as a nonlinear relationship between knowledge depth and incremental innovation. Furthermore, the moderating effects of the interaction between knowledge breadth and knowledge depth on the above-mentioned relationships are also examined. Due to the different natures of the two types of innovations, it is hypothesized that knowledge depth positively moderates the relationship between knowledge breadth and radical innovation while knowledge breadth negatively moderates the relationship between knowledge depth and incremental innovation. To empirically test the hypotheses, secondary data from multiple sources were collected on 64 pharmaceutical firms over 15 years. Due to the panel data structure and observed dispersion issues in the dependent variables, negative binomial random effects models were formulated to test the hypotheses. The statistical results largely support the proposed hypotheses. The results demonstrate that while knowledge breadth positively contributes to the development of radical innovations and knowledge depth positively contributes to the development of incremental innovations, both relationships are subject to diminishing returns. Furthermore, while the finding did support the negative moderating effect of the knowledge breadth on incremental innovation, the positive moderating effect of knowledge depth on radical innovation is not supported. While the effect is not explicitly hypothesized, knowledge breadth seems to have a direct impact on incremental innovation as well.