The Secret Ingredient of Innovation? It’s Not Diversity, But the Ability to Make It Work
The war for talent is now one of the major challenges of the knowledge economy. From multinational artificial intelligence firms to pharmaceutical companies, and across the semiconductor and clean energy industries, the ability to attract researchers and engineers from different countries is considered a key driver of innovation. In the United States, the beating heart of global industrial research, the number of highly skilled foreign-born workers has grown rapidly in recent decades, transforming research laboratories into increasingly multicultural environments.
For a long time, it was commonly accepted that this growing diversity represented, in and of itself, a competitive advantage. More perspectives, more experiences, and more skills should translate into better ideas. However, while diversity remains a necessary condition for innovation, the picture emerging from existing research is far less straightforward. While some studies have found that diversity has a positive effect on innovation, others have pointed to coordination costs, communication difficulties, and a higher likelihood of conflict. What explains this apparent contradiction?
This is the question that serves as the starting point for the new study by Stefano Breschi, Luisa Gagliardi (both from the Department of Management and Technology, Bocconi University; ICRIOS), and Thomas Yoon (School of Management, University of Liverpool), published in the Strategic Management Journal. Rather than asking whether diversity is good or bad for innovation, the authors focus on a factor that has so far remained in the background: the way people collaborate within the organization.
When diversity is only apparent
The study begins with the observation that the mere presence of people with different backgrounds within the same company does not necessarily mean that they collaborate with one another. On the contrary, in complex organizational contexts, people often spontaneously tend to collaborate with those they perceive as similar—sharing a common language, culture, or educational background. This can lead to the formation of relatively isolated groups that develop excellent skills but engage in little dialogue with one another.
The authors suggest that this dynamic is key to understanding the conflicting findings in the literature.
“We argue that integration is the missing link that reconciles these opposing effects.”
The “missing link” is therefore integration: an organization’s ability to create collaborative networks that bridge ethnic and cultural differences.
To test this hypothesis, the researchers analyzed the patent activity of 890 publicly traded U.S. companies, mapping the collaborations among 485,987 inventors who produced 921,131 patents between 1990 and 2015. They did not merely measure how diverse a given company’s workforce was in terms of ethnic and cultural backgrounds; rather, they examined with whom each individual inventor collaborated within the same organization, developing an original measure of integration based on co-invention networks.
They found that companies where inventors collaborate more frequently with colleagues from different ethnic groups produce patents that the market values more highly.
Working together leads to better innovations
The value of the study lies not only in its empirical findings but also in its underlying implications. Different ethnic backgrounds often correspond to distinct skill sets. This is not because ethnicity in and of itself determines talent, but because educational systems, university specializations, professional networks, and migration patterns steer people toward specializing in different technological fields.
The authors’ analysis confirms this trend. Inventors of Indian origin are relatively more specialized in information and communication technologies, while those of Chinese origin show an above-average presence in electronics and chemistry. If these skills remain confined within isolated groups, the company’s knowledge base remains fragmented. When, however, they interact with one another, the possibilities for creating new technological combinations increase. As the authors observe:
“Integrated organizations exhibit collaboration networks that are not partitioned into homophilous clusters... Such cross-ethnic ties enhance knowledge sharing and coordination, facilitating the exchange and recombination of diverse knowledge sets.”
The research also shows that this effect becomes even stronger when companies develop technologically complex innovations. The more an invention requires knowledge from different technological domains, the greater the value of collaborations that combine diverse expertise.
A managerial challenge, not just a cultural one
This study addresses a topic of great managerial significance. Between 1990 and 2015, the ethnic composition of the companies studied changed profoundly. The share of inventors belonging to the Anglo-Saxon ethnic group declined from about 83% to just over 63%, while the presence of Chinese and Indian inventors grew markedly. At the same time, however, collaboration networks became progressively less integrated—a sign that the increase in diversity did not coincide with a corresponding increase in interactions between different groups.
Hiring people from different backgrounds, therefore, is only the first step. Competitive advantage depends above all on the ability to build environments in which these people truly meet and are encouraged to interact and collaborate: through interdisciplinary teams, inclusive leadership, mentoring programs, and organizational practices that foster the flow of ideas. In an era when innovation increasingly stems from the recombination of highly specialized knowledge, a company’s true capital is not merely the variety of talent it can attract. It is its ability to transform that variety into a collaborative network. Because diversity opens up possibilities. But it is integration that transforms them into innovation.
